title: scrollView with Memory Management in iOS which is very strange caused EXC_BAD_ACCESS
body: <p>Today I got a "EXC_BAD_ACCESS" ,so I debug the code to solve the problem. Now I find out where
  the problem is, but I don't know why. Can you help me ?</p>
  
  <p>in the 
      -(void) dealloc
      {
      ....
       [self.scrollView release]; 
      // if I add comment to this line above ,my app will work, else it will die.
      ......</p>
  
  <h1>    }</h1>
  
  <p>these are the places where I used the [scrollView]</p>
  
  <pre><code>@interface ChatFriendInfoController :UIViewController
  {
      UIScrollView *scrollView;
  }
  </code></pre>
  
  <h2>    @property (nonatomic, retain) IBOutlet UIScrollView *scrollView;</h2>
  
  <pre><code>@implementation ChatFriendInfoController
  @synthesize scrollView;
  
  self.scrollView.frame = CGRectMake(0, 64, 320, 416);
  self.scrollView.alwaysBounceVertical = YES;
  self.scrollView.contentSize = CGSizeMake(320, 960);
  </code></pre>
  
  <h1>    [self.scrollView addSubview:infoTable];</h1>
  
  <p>That's All . Thank you.</p>