After looking at your attachment, I'd definitely reapply the 2b7 upgrade again and see if it still stalls at that point.

The other interesting item is the message "Tried to mount /dev/hda4 as reiserfs but got error 19"

Hmmmmm.

Other than that it looks like the music/playlist partitions are safe. Ain't it grand that the music partitions are set to RO...

Best wishes on this one...