If you try to open this http://news.sportbox.ru/Vidy_sporta/Futbol/Chempionat_Mira_2010/spbvideo_V-1610-8-iyulya-Luchshiy-gol-YUAR-2010, DF taskbars will flicker 2 or 3 times.

I don't know what the reason, but I think that is because of Adobe Flash player (version 10 was installed).

Yes, I tried this version. Issue remains.

If it could be helpful, flickering repeats when forward and rewind video.

Firefox 3.6.6 with couple of plugins, Shockwave Flash 10.1.53.64.

Both, in full screen and normal mode.
Seems like it occur with every Flash video.

No changes for me.
2 timer for every flash video.

Hey, Jon!
Maybe, it is individual PC+software configuration issue.
I'd update ATI video card driver and flickers reduced to minimum (but they are still here).

Flash says "You have version 10,1,85,3 installed".

Hm. Without DF, there is no problem now. Strange... Maybe, I will record a little video to show it.

OK! This is it: http://www.youtube.com/watch?v=uLy_eFl_J4E
Left monitor is default, firefox with youtube.
Right monitor have df taskbar, and utorrent opened.

I press F5 several times cause camera can record flickering in different ways.

I send you DisplayFusion.log via Support-Mailing Address-Contact Form.
What I do after debug log enabling:
1. View DF Troubleshooting big memo a bit;
2. Open videos on firefox, then close and reopen firefox;
3. Open utorrent on secondary monitor;
4. Jump to firefox again;
5. Stop logging.

Note that I tried youtube.com and rutube.ru videos:
1. Youtube: 2-3 flicks on start playing video;
2. Rutube: 1 on start and 1 on end (closing tab).

"Window Location" is off.

I fully understand your words. I'll surely tell you if this issue will be completely fixed via software/driver update or hardware changes.

I think that is flash 10 + ati videocard issue.