>Glad you got it fixed. Just yesterday I had to fix update problems with 2 client workstations (XP SP3). On both of them, all or some .Net updates were failing, and all Silverlight updates on both were failing.
>
>The solution was drastic, but didn't take too long:
>
>- Remove all .Net framework versions with the .Net Framework Cleanup Tool
>- Then reinstall the frameworks in the following order:
>- Reinstall .Net Framework 3.5 SP1 (which also installs 2.0 etc.)
>- Reinstall .Net Framework 1.1
>- Reinstall .Net Framework 1.1 SP1
>- Reinstall .Net Framework 4
>- Delete 2 Silverlight-related registry keys and the C:\Program Files\Microsoft Silverlight folder
>- Reinstall Silverlight
>- Manually run Windows/Microsoft Update to get latest updates for all the above
>
>All the above takes about 1.5 hours and 6 reboots IIRC.

Yes, this is what I thought about a while but didn't do it because this was not on a test server and would have affected a lot of issues.