IPhone 3G instability

Hello -
I've been noticing some instability with my iPhone beyond some of the apps crashing at laugh and returning me to the home screen.
It started yesterday when the iPhone dropped my bluetooth headset connection a couple of times. The OS also crashed with a gray screen once but recovered. It crashed a second time and did not recover. Whatever I did the screen stayed black with some thin green and red vertical lines. I was able to restore via iTunes and now have version 5A347. This morning it crashed again, but did recover without having to do a full restore via iTunes.
Is anyone else having similar issues?
Thanks,
Lorenzo

Update: My iPhone crashed 3 more times this morning, and didn't recover from the last crash. I took it to the Apple Store and they swapped it out for a new one.
Hope that I don't have the same issues with this handset.
Lorenzo

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@wetdro
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Message was edited by: prince.buster

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