[meimeiriver]

You could always just try and tell XBMC where the content is directly.

Instead of configuring Windows to mount X: to \\server\movies, then configuring a source in XBMC as X: drive

TRY:

Configure your source within XBMC to point to smb://server/movies/

This will take out the whole requirement for the OS to reconnect the drive.

Now that's an interesting suggestion. I will try that.