I don't know if anyone has seen this problem but it happened to both 2 ipod touch 2nd gen of mine. It happen even before I jailbreak it. I have 2, one is jailbrokend and one not. Ok, so here it is. I touch an application to laugh it, and the "greeting screen" of that program show up for a few second (2, or 3 seconds) then it just back out, just like I hit the Home button. And it happen to all the app that I got from App store! The thing is I got one ipod first, and after a couple days, this happen, then I restore it to factory setting to fix it. And i have just got another 2nd gen last Friday, and this happen to this ipod this morning, then I have just restored it to "fix" it again. Now, I took my other ipod out and see that it happens again to this one??? That's really weird!! I mean, just after a while, I have to restore the ipod to fix this?? Anyone has any advise?