We'll start with the obligatory I've uninstalled and reinstalled both flash and
firefox for OS X. Both are updated to the current and I'm running a completely
updated OS X 10.4.9 Intel Version.

Now, the issue. Flash files won't SHOW until you scroll past them in Firefox.
Then they show, but when you scroll back up so the whole flash is in the
window, the video disappears again. Doesn't do this in Safari. The problem is
getting really annoying tho, so I thought I'd see if anyone had any ideas.

Thanks.