title: how comes the error: FileNotFoundException /proc/mtprof/status occurs?
body: <p>Sudden out of nowhere the error below comes up whenever I start my activity.
  this is the complete logcat: <a href="http://pastebin.com/Qdz2BCp4" rel="nofollow">http://pastebin.com/Qdz2BCp4</a></p>
  
  <p>This is my MainActivity in which the error occurs:</p>
  
  <pre><code>public class MainActivity extends FragmentActivity {
  private DataSource _dataSource;
  
  private Spinner _spinner1, _spinner2;
  
  private int _category;
  
  private double _inch;
  
  private List&lt;String&gt; _categoryList = new ArrayList&lt;String&gt;();
  
  private List&lt;String&gt; _sizes = new ArrayList&lt;String&gt;();
  private ArrayAdapter&lt;String&gt; _dataAdapter;
  
  private ArrayAdapter&lt;String&gt; _sizesAdapter;
  
  private String _size;
  
  public static User _user = null;
  
  private boolean _inAccountDetails = false;
  
  public final static String EXTRA_MESSAGE = "com.OBO.Bandenanalyse.Soort";
  
  public final static String EXTRA_MESSAGE2 = "com.OBO.Bandenanalyse.Inch";
  
  public final static String EXTRA_MESSAGE3 = "com.OBO.Bandenanalyse.Maat";
  
  public final static String EXTRA_MESSAGE5 = "com.OBO.Bandenanalyse.User";
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      if(savedInstanceState != null &amp;&amp; savedInstanceState.getBoolean("Layout")){
          setContentView(R.layout.registration_edit);
          initializeAccountDetails((User) savedInstanceState.getSerializable(EXTRA_MESSAGE5));
          _inAccountDetails = true;
      }else{
          String sql = "SELECT * FROM User";
          createFile();
          if(_dataSource.DbHelper._database != null){
              _dataSource.open();
              Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql,null);                          
              cursor.moveToFirst();
              _dataSource.close();
              if(cursor.getCount() == 0){
                  setContentView(R.layout.registration);
                  createFile();
              } else {
                  setContentView(R.layout.activity_main);
                  addListenerOnSpinnerItemSelection();
                  addListenerOnSpinner2ItemSelection();
                  createFile();
                  _user = getUser();
              }
              cursor.close();
          }
      }
  }
  
  @Override
  public void onSaveInstanceState(Bundle savedInstanceState) {
    super.onSaveInstanceState(savedInstanceState);
    savedInstanceState.putBoolean("Layout", _inAccountDetails);
    savedInstanceState.putSerializable(EXTRA_MESSAGE5, (Serializable) _user);
  }
  
  @Override
  public void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);  
    savedInstanceState.getBoolean("Layout");
    _user = (User) savedInstanceState.getSerializable(EXTRA_MESSAGE5);
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      getMenuInflater().inflate(R.menu.main, menu);
      return true;
  }
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
      // Handle item selection
      switch (item.getItemId()) {
          case R.id.account_manager:
              setContentView(R.layout.registration_edit);
              initializeAccountDetails(_user);
              _inAccountDetails = true;
              return true;
          case R.id.delete_account:
              new DeleteDialogFragment().show(getSupportFragmentManager(), "Dialog");
              return true;
  
          default:
              return super.onOptionsItemSelected(item);
      }
  }
  
  private void initializeAccountDetails(User user){
      try{
          EditText editText1 = (EditText) findViewById(R.id.editText1);
          editText1.setText(user.getFirstName());
  
          EditText editText2 = (EditText) findViewById(R.id.EditText01);
          editText2.setText(user.getSurname());
  
          EditText editText3 = (EditText) findViewById(R.id.EditText02);
          editText3.setText(user.getEmail());
  
          EditText editText4 = (EditText) findViewById(R.id.EditText03);
          editText4.setText(user.getPostalCode());
  
          EditText editText5 = (EditText) findViewById(R.id.EditText04);
          editText5.setText(user.getHouseNumber());
      } catch(NullPointerException e){
          Toast.makeText(this, getString(R.string.noAccountRegistered), Toast.LENGTH_LONG).show();
      }
  }
  private boolean RetrieveInfo(){
      String email, voornaam, achternaam, postalCode, housenumber;
  
      EditText emailTxt = (EditText) findViewById(R.id.EditText02);
      EditText voornaamTxt = (EditText) findViewById(R.id.editText1);
      EditText achternaamTxt = (EditText) findViewById(R.id.EditText01);
      EditText postalCodeTxt = (EditText) findViewById(R.id.EditText03);
      EditText housenumberTxt = (EditText) findViewById(R.id.EditText04);
  
      if(!emailTxt.getText().toString().matches("") &amp;&amp; !voornaamTxt.getText().toString().matches("") 
              &amp;&amp; !achternaamTxt.getText().toString().matches("") &amp;&amp; !postalCodeTxt.getText().toString().matches("") 
              &amp;&amp; !housenumberTxt.getText().toString().matches("")){
          email = emailTxt.getText().toString();      
          voornaam = voornaamTxt.getText().toString();        
          achternaam = achternaamTxt.getText().toString();        
          postalCode = postalCodeTxt.getText().toString();        
          housenumber = housenumberTxt.getText().toString();
          _user = null;
          _user = new User(email,voornaam,achternaam,postalCode,housenumber);
          return true;
      } else {
          return false;
      }
  }
  
  private static final String EMAIL_PATTERN = 
          "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
          + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
  
  private boolean CheckInfo(){
      Pattern pattern = Pattern.compile(EMAIL_PATTERN);
  
      EditText emailTxt = (EditText) findViewById(R.id.EditText02);
      Debug.out(emailTxt.getText().toString());
      if(pattern.matcher(emailTxt.getText().toString()).matches()){
          return true;
      } else {
          Toast.makeText(getApplicationContext(), getString(R.string.noValidEmail), Toast.LENGTH_LONG).show();
          return false;
      }
  }
  
  public void toApplicationEdit(View view){
      if(CheckInfo()){
          if(RetrieveInfo()){
              Intent intent = new Intent(this,this.getClass());
              String sql = "UPDATE User SET Email='"+_user.getEmail()+
                      "', Voornaam='"+_user.getFirstName()+
                      "', Achternaam='"+_user.getSurname()+
                      "', PostalCode='"+_user.getPostalCode()+
                      "', Housenumber='"+_user.getHouseNumber()+
                      "' WHERE User_ID="+1+";";
              if(_dataSource.DbHelper._database != null){
                  _dataSource.open();
                  _dataSource.DbHelper._database.execSQL(sql);
                  _dataSource.close();
              }
              startActivity(intent);
          } else {
              Toast.makeText(this, getString(R.string.everyFieldIsMandatory), Toast.LENGTH_LONG).show();
          }
      }
  }
  
  public void cancelToApplication(View view){
      Intent intent = new Intent(this, this.getClass());
      startActivity(intent);
  }
  
  public void toApplication(View view){
      if(CheckInfo()){
          if(RetrieveInfo()){
              Intent intent = new Intent(this, this.getClass());
  
              String sql = "INSERT INTO User(Email, Voornaam, Achternaam, PostalCode, Housenumber)" +
                      " VALUES('"+_user.getEmail()+"'," +
                              "'"+_user.getFirstName()+"','"+_user.getSurname()+"'," +
                                      "'"+_user.getPostalCode()+"','"+_user.getHouseNumber()+"');";
              String sql2 = "SELECT User_ID From User WHERE Email = '"+_user.getEmail()+"';";
              _dataSource = new DataSource(this);
              if(_dataSource.DbHelper._database != null){
                  _dataSource.open();
                  _dataSource.DbHelper._database.execSQL(sql);
                  Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql2,null);                         
                  cursor.moveToFirst();
                  _dataSource.close();
  
                  while (!cursor.isAfterLast()) {
                      cursor.moveToNext();
                  }
                  cursor.close();
              }
              startActivity(intent);
          } else {
              Toast.makeText(this, getString(R.string.everyFieldIsMandatory), Toast.LENGTH_LONG).show();
          }
      }
  }
  
  private User getUser(){
      String sql = "SELECT * FROM User";
      String email = "", voornaam = "", achternaam = "", postalCode = "", housenumber = "";
      if(_dataSource.DbHelper._database != null){
          _dataSource.open();
          Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql,null);                          
          cursor.moveToFirst();
          _dataSource.close();
  
          while (!cursor.isAfterLast()) {
              email = cursor.getString(1);
              voornaam = cursor.getString(2);
              achternaam = cursor.getString(3);
              postalCode = cursor.getString(4);
              housenumber = cursor.getString(5);
              cursor.moveToNext();
          }
          cursor.close();
      }
      return new User(email,voornaam,achternaam,postalCode,housenumber);
  }
  
  public void createFile(){
      _dataSource = new DataSource(this);
  }
  
  public void addItemsOnSpinner2(List&lt;String&gt; list) {
      _spinner2 = (Spinner) findViewById(R.id.spinner2);
      ArrayAdapter&lt;String&gt; dataAdapter = new ArrayAdapter&lt;String&gt;(this,
          android.R.layout.simple_spinner_item, list);
      dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
      _spinner2.setAdapter(dataAdapter);
      _sizesAdapter = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_spinner_item, list);
  }
  
  public void addItemsToAdapter(List&lt;String&gt; list){
      _dataAdapter = new ArrayAdapter&lt;String&gt;(this,
              android.R.layout.simple_spinner_item, list);
  }
  
  public void addListenerOnSpinnerItemSelection() {
      _spinner1 = (Spinner) findViewById(R.id.spinner1);
  
      _spinner1.setOnItemSelectedListener(
              new OnItemSelectedListener() {
                  public void onItemSelected(
                          AdapterView&lt;?&gt; parent, View view, int position, long id) {
                      _inch = Double.parseDouble(parent.getItemAtPosition(position).toString());
                      String sql = "SELECT Maat, Category FROM Band Where Inch = "+_inch;                     
                      _spinner2 = (Spinner) findViewById(R.id.spinner2);
  
                      if(_dataSource.DbHelper._database != null){
                          _dataSource.open();
                          Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql,null);                          
                          cursor.moveToFirst();
                          _dataSource.close();
                          if(_categoryList.size() != 0){
                              _categoryList.clear();
                          }
                          if(_sizes.size() != 0){
                              _sizes.clear();
                          }
                          while (!cursor.isAfterLast()) {
                              _sizes.add(cursor.getString(0));
  
                              if(cursor.getString(1) !=null){
                                  _categoryList.add(cursor.getString(1));
                              }
                              cursor.moveToNext();
                          }
                          cursor.close();
                      }
                      addItemsOnSpinner2(_sizes); 
                      addItemsToAdapter(_categoryList);
                  }
  
                  public void onNothingSelected(AdapterView&lt;?&gt; parent) {
  
                  }
              });
    }
  
  public void addListenerOnSpinner2ItemSelection() {
      _spinner2 = (Spinner) findViewById(R.id.spinner2);
      _spinner2.setOnItemSelectedListener(
              new OnItemSelectedListener() {
                  public void onItemSelected(
                          AdapterView&lt;?&gt; parent, View view, int position, long id) {
                      if(_categoryList != null){
                          _category = Integer.parseInt(_dataAdapter.getItem(position));
                      }
                      if(_sizes != null){
                          _size = _sizesAdapter.getItem(position);
                      }
                  }
  
                  public void onNothingSelected(AdapterView&lt;?&gt; parent) {
  
                  }
              });
    }
  
  public void next(View view) {
      Intent intent = new Intent(this, Step2.class);
      intent.putExtra(EXTRA_MESSAGE, _category);
      intent.putExtra(EXTRA_MESSAGE2, _inch);
      intent.putExtra(EXTRA_MESSAGE3, _size);
      intent.putExtra(EXTRA_MESSAGE5, (Serializable) _user);
      startActivity(intent);
  }
  
  }
  </code></pre>
  
  <p>As far as i know i'm not doing anything which has something to do with creating files on the memory. The only thing i'm doing in the createFile method is checking if a database exists on memory (and it does exists if i  may believe my file explorer). If the database does not exist, it'll create the database.</p>