On a Windows XP Home PC, noticed after a Nvidia driver upgrade that was getting Event 1517 in Event log for application when shutting down or logging off. Event 1517 is “Windows saved user ComputerName\UserName registry while an application or service was still using the registry during log off. The memory used by the user’s registry has not been freed. The registry will be unloaded when it is no longer in use. This is caused by services running as a user account, try configuring the services to run in either the LocalService or NetworkService account.” Using UPHCLean installed found it to be related to svchost for DCOMLaunch. PC is clean as far as viruses/spyware and has Blackice as firewall installed & Norton 2007. The video driver installed ok and I can’t see how that relates to a DCOM service causing the above message. Noticed it does this to whatever user logs into this PC. Anybody got any ideas how this can be troubleshooted to eliminate this DCOM service from not doing this at shutdown/logoff. Want to keep the DCOM service running during login, but just looking to see what the problem is from it not stopping/unloading from profile at shutdown or logoff. Thanks.