I am using Firefox 7 and the new official Adobe Flash 64-bit plugin from the Ubuntu Partner repository. It's the adobe-flash package. It works nicely on the first look but when I try to skip ahead in any YouTube video (by clicking on the video progress bar) sound will go on but the video simply freezes at the position it was just before skipping. This is really annoying because I really don't want to watch every video full length.

Now maybe there's cleanup work to do?

• I removed every Flash-related package from the package manager.

Maybe it's Firefox?

• I couldn't find any hint.

Maybe it's the video manager (display manager)?

• I am using KDE on an Ubuntu Natty install.

I also enabled hardware acceleration with libdvpau1:

• sudo bash -c "echo 'EnableLinuxHWVideoDecode=1' >> /etc/adobe/mms.cfg" (this seems to have no effect at all ...)

• Ubuntu Natty 64-bit, Firefox 7, Flash 11.01 )