Hey,
I had this same problem for a month or so and i figured out that the problem was that whenever I pressed the space key it would freeze up and restart. For awhile i just used "." insted of space but i took it into verizon (Flash game hacks and all) and they tried to do a software change but it didnt do anything so they finally just replaced it. Id say your best bet would be to do what i did and just take it in and have them replace it. Also, i would worry about them crying about the hacks because i doubt theyed be able to find them unless they really searched the phone.
Good Luck, Hope this helps...
