Anyone else deal with this, I will use it like 30 seconds prior, lock the screen and go to pick it up and nothing, I have to pull the battery and reboot. Happens a couple times a month maybe, usually happens when I am actually trying to do something. I am currently running on Nonsensikal 8.8 but it did it on Ivans 1.0 and Nonsensikal 7.5 as well. It may have done it on the stock 2.1 rom as well, but I cannot remember. It seems to happen more often now that it is on Froyo though.