Firefox: Whenever I try to insert a video (the embed code) from either YouTube or Giant Bomb and click Insert, the blog area blinks once (the progress bar shows up) and nothing happens, the blog area remains empty.
IE: In IE, videos from YouTube can be embedded without issue. The GB videos, however, show up as white rectangles, but not before I hit the Post Blog button. They can be played back normally while in edit mode, but as soon as I hit Post Blog, the blog only shows white rectangles instead of actual videos. The player component is there, there just isn't anything to play back (this is also true for FF, versions 3.5 and 3.6).
The strange thing is, I already have blogs with YT videos embedded in them, and if I paste the embed code from those older blogs into a new one, the videos don't come up.
OS: WinXP 32bit SP3 My blog page with a test blog showing a white rectangle (2nd from the top):