All Video and Audio files were also playing too fast on my Fedora 13.
I took the advice about removing pulse audio.
I am running Fedora 13 on a P4 3.2 with 4 gb ram.
I actually added a sound blaster card but have the same issue.
yum -y remove pulseaudio
Did a reboot and all is now working well.
Thanks for the advice I spent hours trying to fix this darned issue!
Wonderful thing about Linux there is always some sort of solution if you dig.
Unlike the MS servers I stand at for hours trying to find an answer on.......
Of course those are billable