Hi Hillbilly and welcome to VectorLinux!
I won't call ya "Grumpy" because I don't know anyone around here like that.
Well... occasionally I am but that's a different story. LOL!
My best guess as to the problem with the video here might be
the version of Flash used in 5.9 Gold. When 5.9 Gold came out I can't recall when installing it back then if it came with 7.0 for Flash or higher? The newest version of Flash out now is 10 I believe but can cause some instability in Firefox 3.0.5. If you could get ahold of Flash 9 for Linux (anyone?) that would be your best bet---provided that's not what is already in 5.9 Gold.
Or, you could wait a few more weeks (if even that long) and get our newest release when it comes out, VL-6.0, as that should solve the problem plus it should run just as well as 5.9 does (if not better) on your current machine. Either/or.
I hope this has helped in some small way? That's all I can think of until "The Wiser Ones" come along anyway.