Mine does this when I drive to and from work across town, or just any where in general. Its annoying to see my phone reset at least 3 times. Having my bluetooth connected seems to reduce the chances of this happening.
Its taken a while to adjust to not having cards to swipe. Now I fly through the device like a pro. I have my scene set the way I want it and I am enjoying it!
Picked up the silicon case and the screen protector. Got them both for just under $20 from the corporate store.
I don't know if I can upload pictures but I'll snap some off and stick them on photobucket.
Edit: Here you go. A link to an album with images I just took of my Evo with the silicon...