Weird Error on apps

hey guys
i have a iTouch 2G 32GB
and its awesome and it was all going ok
until a day that suddenly i started an application
and it suddenly closed
it was something like 2 seconds working and then it closes
that happens to any music i am playing and it happened to all the extra-installed apps.
Then i restored my itouch completely
re-installed everything
resynched the songs and everything
but idk why it happened again today and it doesnt stop.
im about to try to restore but that sucks because if it happens again i have to restore and again and again.
so i wanted to know if it happened to any of you guys or if there is a fix for that.
I am using iTunes 8.0.2 the normal cable to connect the iTouch 2G 32GB to the pc and thats about it. sooo help would be awesome!!
thanks a lot in advance!