Hi. I know this is lame but it's just pis$ing me off

) I had the same problem in F9 but didn't have the time to even ask for a solution. Now I'm running F10 on my HP laptop PC, the system is up to date, running gnome 2.24.1 and nvidia gf 8300 video card. The problem is that I get black background for my dynamic icons in my system lot (tray) for applications like last.fm, skype, pidgin (those who regulary change).
Sorry if this question was already asked, I didn't find anything like this though. Is there a way to fix this?
Thanks,
K.
UPD. Jeez, sorry I think I posted this in the wrong section