I rooted using unrevoked and used root explorer to delete the app in /system/app/ directory. I get a message saying the app is deleted and I see it disappeared. When I exit out from root explorer, go to list of apps, I still see the icon of the app in the list and can still open it. Then when I restart the phone and go back to /system/app/ directory, I see the app back again. Anybody knows why this is happening? The apps seem to be cached somewhere. I've read that system app cannot be deleted using the unrevoked root method, but there are other people who say it does. Using root explorer seems to delete the app, but reappears again. I'm really clueless on this one.