HN when I first open a post to edit it does the same thing, I can see all the code and tags, but then it redraws the screen and it looks normal.
I'm using Firefox...Is there some browser dependancy setting in the forum software somewhere ? What browser are you using ?
Funnily enough I tried to post one of my flikr images the other day using IE and I could not get it to work for some reason, opened the forum and used firefox and not a prob at all... strange!