Comment 5 for bug 509983

I have been suffering from this bug since upgrading to Karmic (Ubuntu), however, I have narrowed down the problem (I think).

The problem doesn't affect Opera and that puzzled me a little - but it all makes sense now: Opera has it's own Flash-plugin installed. It uses the 10.0 r12 build of shockwave flash instead of the global 10.0 r45 plugin used by Firefox and other browsers (I don't have Chromium installed, but I suspect that it use r45 as well).

As to the symptoms, this is what I've found:
- It only affects embedded players (i.e. "I like this video and I think I'll embed it into my own site") - YouTube, LiveLeak etc. works fine.
- It happens to all flash games
- Moving the cursor around in the flash-object or keep a button within a game pressed seems to make the flickering much less pronounced, but doesn't make it disappear completely.
- ** This might be an unrelated bug ** trying to change the flash settings seems to make the entire flash object unresponsive and I have to update the page for the object to become responsive again.
- When the flickering occurs (almost constantly in some objects) it seems like hidden layers is visible beneath the top layer becomes visible.

I have tried to revert back to version 10.0 r12 to see if I could fix the issue in Firefox - but It isn't included in the Karmic repo and I have no idea how to force a version manually (or if it is even possible). If it is possible to include the r12 build in the version list for flashplugin-nonfree so you can manually force an earlier version, we could have a temporary workaround. Otherwise - try Opera, it works for me and others with the same issue.