Had to reset permissions on the users data tree, and external database, and this resolved IAdmin not listing any users, but Still can't log into IClient. Email Sent to Support, hoping someone here has any ideas.... Would love to get this back up and running ASAP!

Only Log Entry I can find, (IIS)

2008-06-08 10:31:34 W3SVC1 <local server ip> GET /IClient/Login.aspx - 81 - <myip> Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.0;+WOW64;+SLCC1;+.NET+CLR+2.0.50727;+.NET+CLR+3.0.04506;+Media+Center+PC+5.0) 200 0 0
2008-06-08 10:31:48 W3SVC1 <local server ip> POST /IClient/Login.aspx Login+Attempt:+[username@domain]Invalid+Credentials:+[username]+Invalid+Username/Password. 81 - <myip> Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.0;+WOW64;+SLCC1;+.NET+CLR+2.0.50727;+.NET+CLR+3.0.04506;+Media+Center+PC+5.0) 200 0 0

Make sure IIS_WPG, IIS_WAM, IIS_<SERVNAME>, Network Service, have Full Read & Write on Database Folder & User Folders

Make sure the "Read Only" Box is magically greyed out, or checked on General Tab, (not sure what cuased this)..