I have issues on Firefox as well. Safari works great.
Ryan it doesn't work at all on mobile apps including the ipad.
Issues include:
1)The names that appear on Coralline's "Who's online" are always fewer than the names that are simultaneously showing on my buddy list. And yes all the names on my buddy list are checked as friends.
2) In Firefox 3.6.13 when I click on a name in the "Who's On-line" list the name shows up on the bottom tool bar just to the left of where it says Who's online (#) but no window opens for that person. If I click on a 2nd person that name opens up normally, but the 1st name remains inactive. So basically, I need to click on someone I don't want to send amessage to 1st before I can send one to the right person.
3) If I can get a window to open, and I click a 3rd or 4th name windows will open for them, but the presently open window will close. In safari, they open side by side and you can keep multiple chat windows open.
4) People get kicked out or timed out or something out of chat rooms on a regular basis. Running them as "popouts" helps a lot, but doesn't solve the problem totally.