Greetings,
It seems I'm experiencing the same issue - it appears Pandora must have changed something to prevent Pandora's Jar (7.4.0 Beta_CF7) from continuing when a new song is loaded. :(
Every status message remains at initing/retrieving and no MP3s are ripped. When I was last using my exact same setup (Firefox+Greasemonkey, Flash8) on Feb 2nd, everything worked flawlessly and I was pulling down tracks in auto-pilot. The 'Grab This Track' button also does nothing for me...
I first noticed this when it seemed only the same 7-8 INFO/DEBUG lines were scrolling in my console window, rather than the usual many different lines...
Anybody else have insight into the issue? Ssorry I have nothing more to offer right now other than corroboration that you're not alone in experiencing this problem...