Flashplayer freezes

[Kai Wüstermann]

Moin!

For our primary school I test xbuntu 7.04 beta with ltsp. All updates
are installed. It works nearly out of the box, but the
flashplayer-non-free freezes on the clients.

If I watch a video on youtube with firefox there is no sound and the
video freezes after 10 or 20 seconds. The video still is downloading and
you can stop and restart the video, but then it freezes aft a few
seconds.

If you quit firefox it disapears from screen, but ps axu shows that it
is still in memory.

I think it's a problem with puls-audio. Xmms can't connect to sound
after using flash until you kill the chrashed firefox. 

Any hints?

Thank you
Kai Wüstermann