Help!

I got a bug in my machine.

A few days ago Youtube stopped working on my XP. The videos seem to load. They play for a few seconds and then stop. I don't get any sound.

I can't recall if I did anything unusual to make it happen.

I'm using the latest Netscape version (9.0.0.6 I believe).

Any advice would be greatly appreciated.

Update: I reloaded Flash (after reloading IE to no effect) and that fixed it.

Further Update: It is broken again.