I find that sometimes apple/W doesn't close tabs without actually clicking in the page first. Firefox does also occasionally 'stick' for a few seconds. I've always put this down to my installing so many extensions and put up with it. Mention of this reminded that somebody onlist might enjoy Reveal, a Firefox extension which provides scrollable previews of all open tabs and more: http://aluminum.sourmilk.net/reveal/. Cheers, Colin.