If your having trouble logging on to your site and your password and user name won't work, your PC starts crunching away, but you can still get into other folders on the same server with no problem you just may need to delete your dot-web (.web) file.

Do a search on your drive

Start Menu | Find | Files or folders
Insert ".web" (without quotes)

The name of the file will indicate which web it refers to.
Delete the .web file which relates to the Web your having problems with. Then FrontPage should connect with no problem.