Recently, opening Youtube videos has caused Firefox to hang/freeze for a moment and/or crash UNLESS I let the video load for a few moments (e.g. if someone sent me a rickroll and I tried to close it before the video showed, FF would hang/crash). It's sort of irritating because sometimes I'll just want to watch a few seconds of video and then click to something else if I'm searching for a particular vid and it'll break.

It also occasionally does this if I open a Youtube video and then switch to another tab -- or it'll freeze before I try to switch and not let me click on anything at all.

Has anyone else experienced this and/or know of a solution?

It happens on my Vista box but not my XP laptop, both with Firefox 3.0.0 and 3.0.4, regardless of extensiosn enabled or not.

I'm getting this too. I don't know what's causing it.

I had something similar happen, I don't remember how I got it fixed but I think it's got something to do with a plugin, like flash or something. I can't remember. But installing the lastest plugin fixed it....

Wow, I'm glad I'm not the only one having this problem. It was real bad a few days ago!

Are you running the latest version of the flash plugin?

I had a problem getting Flash to work consistently but it wasn't causing many of the issues listed in this thread. I assumed that the problem was resolved in one of the previous updates because it just went away.

Youtube runs on Flash, so yeah, updating to the latest Flash might help. As might using Firefox 3.1b1.

yeah, flash. That might have been the problem.