Black screen at youtube videos/problems with flash in general

Hey GeekPolice forums,
i knew about you for a long long time and since i had some probs i decided to register and go ahead and ask.

So my problem is that i see a black screen at every youtube video and have problems with flash(eg when i try to play online mini games even though i dont do very often).this occured today,half an hour ago.

i will be greatful for help since i can only use the computer listening to music

Here are some info that may help:

Browser : Nightly 6.0 Alpha 1 (its a firefox pre-release by mozilla.org)
OS:Ubuntu 10.10 Desktop Edition
Flash Player plugin is installed from the Download Center

thanks for the help!

Hi and welcome to GeekPolice.net

You can find solution for your problem at link bellow :
http://superuser.com/questions/265425/flash-player-not-working-on-ubuntu-10-10-maverick

Regards