Can you guys check this again with the release candidate?
I had exactly the same problem (didn't reply because I had no additional information, only subscribed), but with the RC, it's gone.
I just watched a couple of vids on YouTube, opened some flash websites, no crashes at all.
Remember to create a new Firefox profile just to be safe.
Firefox: 3.0~b5+ nobinonly- 0ubuntu2
Flash: 9.0.124.0ubuntu2
Can you guys check this again with the release candidate?
I had exactly the same problem (didn't reply because I had no additional information, only subscribed), but with the RC, it's gone.
I just watched a couple of vids on YouTube, opened some flash websites, no crashes at all.
Remember to create a new Firefox profile just to be safe.