title: Android touch screen lags when connected with USB
body: <p>When I connect phone to PC with miniUSB-USB cable, touch screen is behaving totally different than normally. It's like ignoring most of the touches.<br>
  For example, unlocking the screen (because of dragging a lock) is impossible.<br>
  Another example, when I want to click some button on the screen, it freaks out. It behaves like if I clicked in some other place or haven't clicked at all.<br>
  Phone's hardware buttons responds correctly.<br>
  If I plug phone out, everything is back to the normal.<br>
  The problem doesn't appear when I'm charging my phone with a charger, from the socket.<br>
  I am developing an application, so I use "USB Debugging" option. However, it doesn't matter if it's on or off, screen still lags badly.<br>
  I also noticed that my phone is automatically charging when connected to PC's USB, but it seems I cannot turn it off and I have no idea if this is the cause.</p>
  
  <p>Anybody knows what's wrong or how to fix it?</p>
  
  <p>Samsung Galaxy Mini (GT-S5570)<br>
  Android 2.2.1</p>