1) I only hear sound from Amarok. Nothing from Songbird, Exaile, Banshee, or Pandora through Firefox.
2) Firefox opens blank dialog boxes that are razor thin. When expanded, the box is blank. Also, I just found out the bookmark sidebar is also blank.~ $ inxi -A
Audio: Card Creative Labs SB Live! EMU10k1 driver EMU10K1_Audigy
Sound: Advanced Linux Sound Architecture Version 1.0.18rc3