I would give more proof with a screenshot but whenever this happens it looks like nothing is happening.
So I just recently re-installed Ubuntu to a earlier version of 11.04 since 12.04 crashed and we got locked out. Yesterday I tried playing the game and I did install the flash plug-in to play the game and other sites. Well, for some reason I have lag and my screen constantly flasses. As if the graphics are messed up? I have them installed but not sure if out-of-date? Due to new harddrive and system configurations are still in need to be fixed around and updates. But the flashing screen stops when I move my mouse(not the actual game mouse), like my pointer on the screen.

The lag goes away until I press right or left to move and the screen continues to flash as it does. It does this a few times in the beginning when I log-in and it's truly annoying :/ Do I need to re-install my graphic cards? They're Nvidia graphic cards, and the computer isn't 'as' slow, so I'm still trying to get used to this new atmosphere of it, haha.
Please help me out in any way you peeps can and if I have to do something I'll try it out and let those know.
Thanks!

Edit: There's one more portion to this issue I just realized. I went to bootcamp because I thought the lag wouldn't be present and it was... When the screen continued to flash I somehow blended in with the background. As in saying if anyone plays ffa..and that one map where you have columns of transparent background that matches and you are like hidden..? That's how it looks to me on some parts of the map.

- What version of Flash?
- Which browser? Or are you using standalone?
- Do you have this issue while watching videos?

- I don't believe it's an updated version of Flash..I'll double check now.
-I use Firefox.(Though I installed Chronium...I think that is spelled right and for that I can't find it on here :/) I never had a problem with lag as bad before, neither did I have this flashyness.
-So far just for the game I have this problem. Lag is noticeable but that is really the only thing that happens often, not a first for me.

Yeah, lag isn't really considered a bug. If you can check the Flash version I can help diagnose your problem better.
If you can't find Chromium in your programs list open Terminal and input:

a dit :

chromium-browser

(wordsafterquote)

Thanks for showing me Chorium for the Terminal here's what I found for Flash: You have version 11,2,202,273 installed. If this doesn't help I'll keep searching.