New to the forum...

Over the past few weeks I have been experiencing a sporadic white screen on my 3G iTouch. I have tried all the remedies (hard reboot and hooked it up to see if iTunes could detect a problem) and it still isn't helping. Have an appointment with the Genius Bar on Friday, but I'm getting to the point where I'm about ready to chunk it under a freight train!

Any help would be appreciated....