I installed IOS4 today and I like some things, but other things were better on 3.1.2. I'm seeing that I still will likely install all of my previous jailbroken programs. Folders on the iphone does some koo things, but it's not better than Categories. It's easier to delete apps which is nice, but lacks much of the customization that Categories had. I'm finding there's a lot that sounded better in theory on ios4 then actual performance. I was wondering why my battery seemed to be less. I just found out how to check my background apps and apparently there were about 11-12 that never closed and have been running for the last 6hours. Always on background tasks= APPLE FAIL.