Update Microsoft's Internet Explorer 7 went on a limited beta release today and contains a nasty surprise for some users.

Users with search toolbars from Yahoo! and arch-rival Google have discovered that these vanish. Other third-party toolbars designed to block pop-ups or aid with form filling appear to be working normally, according to reports from Reg readers.

I suspect that this move will result in a few more IE users switching over to a browser like Firefox which pretty much allows users to use the browsing tools they want.

Update:

Looks like this may be false.

(via Robert Scoble in the comments)