HTTP 501 not implemented ? what's that about?

I normally use Firefox to browse but also have IE. The only other user of my PC (who has a separate user account) only uses IE. I've just tried to use IE but am unable to browse because "HTTP not implemented". Firefox is working perfectly and IE works no problem if I log in as the other user. I have not knowingly changed any settings recently so I'm at a loss as to why IE will not work.

Any suggestions as to what I need to do put things right?

  Number 7 17:40 30 May 05

Have a look here: click here

Aha - that cracked it. thanks very much.

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