I am getting 401.1 errors on my site. Running IIS 6, anonymous access only. I have changed the password on the IUSR account and and in IIS, I've also tried setting IIS to use my admin account. All to no avail. Directory permissions have been checked and double checked. The site was working fine two days ago and I have made no changes. I haven't even logged on to the server in days. I've restarted all appropriate services and the server itself. All five websites that it hosts are doing the same thing.