I use ClockworkMod Recovery, and Slimbean.
Recently, my slimbean started hanging at the loading screen and getting insanely hot. So I took a backup, and cleaned flashed AOKP rom. It's working fine so far. Initially, I tried to do a flash without clearing data. Then, a clean flash with "advanced restore"ing the data alone from the backup, but both resulted in the above-mentioned problem of hanging at boot screen.
Is there a way to extract the app-data from CWM backup and restore it manually? Or an app for this?