Yes. the backups settings for adw are stored in the root of your sdcard /here
so they arnt touched unless you format your sdcard. just install adw and restore both desktop and settings tadah!
yes... if your sdcard is NOT partitioned it will behave exactly the way you are used to it behaving
this is new.. id advise uninstall facebook app and reinstall it. can also clear data in settings -> manage apps -> all apps -> facebook
Would not allow for me to delete facebook app.