Here's what's happening - IE has intermittent trouble handling the *object* and *param* tags, so anyone who pastes the embed code from YouTube should delete everything except the *embed* */embed* stuff.

In the content section, if you paste the Youtube URL into the URL field, it should handle it correctly. It's only a problem when the embed code is pasted into the body of the profile. Can you look through some video content and confirm that it works for you?

I'm working on a fix to strip the *object* and *param* tags.