My first guess would be that a virus or some sort of "malware" got into your network and is spreading causing the problem. You might try to download a copy of malwarebytes from malwarebytes.com and run it on any machine which has been affected. It's a free app (although you can buy an enhanced version, the full version works well for scanning and cleaning.) I suspect you'll probably find you have some sort of infection.
-----Original Message----- From: Joe Heaton [mailto:jhea...@etp.ca.gov] Sent: Monday, June 01, 2009 10:45 AM To: NT System Admin Issues Subject: Random explorer.exe issue I have an issue with explorer.exe not starting on boot. It has been happening throughout my organization, randomly. Rarely hits the same person twice in a row. They end up coming to me after trying to reboot 2-3 times, with no luck. I tell them how to go into task manager and start a new explorer.exe task, and all their icons pop up, and they are happy. However, I'm at the point of realizing there must be some underlying issue, as it is extremely widespread. The randomness is what really bothers me though, as there are rarely solutions for random issues. But, I'm hoping that you guys can come up with something. I have googled it, and there is plenty of hard disk space, and the registry keys are correct. (userinit, and shell) Any help/advice/tips are greatly appreciated. Thanks, Joe Heaton ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.48/2148 - Release Date: 06/01/09 06:09:00 ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~