We have a SBS 2008 server, that I attempted a Service Pack 2 update on. The update failed, I finally have the server up and running again, however I "cannot" login to it on the physical machine or RDP from normal mode, safe mode with networking, or directory services restore mode, with any account. I "can" login thru basic safe mode. All other modes simply display "please wait for user profile service", then "Preparing desktop" then, "Logoff" and it returns to the CTRL+ALT+DEL prompt. All other functions appear to be working normally.