Microsoft is certainly being tight-lipped about it. The IE home page was a big white blank this afternoon, and the download page just said 5.5 was no longer available.
My first guess is that someone found a big hole in Active X controls that lets a malicious programmer deep into the client's system. MS has had some minor problems in that area several times since the launch of 5.5. It's just a guess, however.
Integrate the browser too deeply with the O/S and you just might open up a can of worms.
The silence on this issue is getting unnerving! I can find no media attention and Microsoft even pulled the one terse sentence from their site which said that 5.5 was not available. Now the page is blank.
gmiller, when did you first learn about MS pulling Explorer? Is it related in some way to the recent hacker attacks?
It's like the elephant standing in the middle of the room that no one will mention.