I just did (the other day) a clean install of Centos 5 and am having a really weird problem that I never had before (on centos 4.5).
when listening to nrk p2 (http://www.nrk.no/p2/) using Firefox, and when the small window for the player gets obscured by another window the sound stops playing. Move the obscuring window and it starts right up. I haven't yet been able to tell if it is paused, or if it is just silenced but still running.
Anybody got any clues?