ON 20080529@4:55:57 PM at page:
http://techref.massmind.org/techref/os/win/2003sbs.htm#39597.7055208333
James Newton[JMN-EFP-786] Says

Drive space alerts showing that a drive number which doesn't exist is at 0% free space: This seems to be related to a USB drive.<br>
<TT>devcon restart usbstor*</TT><br>
from the command prompt appears to solve the problem.



ON 20080529@4:58:35 PM at page:
http://techref.massmind.org/techref/os/win/2003sbs.htm#39597.707349537
James Newton[JMN-EFP-786] Says

Installing new Intelligent Message Filter updates causes SMTP service to stop, then trying to start it causes a hang (service does not respond to start signal in a timely fashion): This is apparently caused by interference by anti virus programs. Removing AVG from the server "solved" the problem, but we need it, so AVG support needs to fix the issue. More when I know it.