I have tried downloading the security update for Media Player 10 from
http://drmlicense.one.microsoft.com/indivsite/en/indivit.asp but everytime I
try I receive the following error message after pressing the "Upgrade" button:
"Windows media player cannot play the file because a network problem
occurred. Verify that you are connected to the network and try again", even
though I am connected.
I have XP SP2. My Media Player has all other updates applied.

Any help appreciated.