IIS iUSR accounts and passwords
It's good to be secure. But one thing that can get you in trouble is resetting the iUSR_SERVER or iWAM_SERVER accounts on an SBS system. Recently that happened to a client of ours.
Here's a great article on how to find the iUSR passwords and what to do to resync them.
http://www.windowsitpro.com/Articles/ArticleID/48361/48361.html?Ad=1

