Tries to connect to network shares on port 80

I have seen a couple of times (using wireshark) that vista tries to access
network shares on port 80. Disabling Webclient in services or lowering it in
the "network provider list" does not make any difference.

Solution has been to wipe the client and start over again.

Has anyone seen this issue and been able to resolve the error without
reinstalling Vista?

Regards, Lars.