web client:

Enables Windows-based programs (Like the Web Publishing Wizard) to create, access, and modify Internet-based files on Internet file servers using the WebDAV protocol. The WebDAV protocol is a file access protocol described in eXtendible Markup Language (XML) that travels over the Hypertext Transfer Protocol (HTTP).


puoi disabilitarlo tranquillamente, anzi lo consigliano

http://smallvoid.com/articles/windows-xp/services/

rifai il reboot e vedi che succede..

sul tab application hai errori o warning interessanti o ricollegabili al tuo problema?