The WebClient service always at "stopping" state. Of course the service itself does not work (I cannot access sharepoint folders using their UNC paths, for example).
Tried rebooting - the service goes to "stopping" right after reboot.
Tried enabling basic authentication as some recommend, did not help.
Tried killing the "svchost" process; the WebClient service then goes out of "stopping" state. Attempting to start the service, it gets stuck in "stopping" right away.
System is WinXP SP2.