[chrialex]

No reason to keep the folder after the correct startup.txt file use grabbed. As far as the apps, there are a few programs that back them up and alert you to updates, aTrackDog from the market is what I use. However, I don't know if the update notices work after a rebuild of the data.img if you reinstall manually. Last I knew they had to be installed from the market to allow you to update them through there in the future.