I'm having a very strange problem on my Windows PC running XP Pro SP2. Here's what happened:
A few days ago my machine became infected with the win32.mebroot.bz trojan which affects the Master Boot Records and starts to replicate your user folder calling it "HelpAssistant," and brings your machine to literally a grinding halt (I had to do hard reboots several times b4 I figured out the problem).
I managed to fix the problem thanks to a few posts about booting from an XP CD, starting Recovery console and running the "fixmbr" command which did the trick.
Since then my machine seems to be fast, clean but also experiences one annoying problem. If two users are logged in (both users are Administrators), it will log out one of the users after approximately 5 minutes. The last user to "log in" is left logged in but the other user is logged out with all programs shut down. I've searched everywhere for a solution and can't find any. All the solutions I've come across relate to the following:
-- Screen Saver configuration (I have this disabled)
-- Power Settings (My settings are correct)
-- A group policy that maybe the cause (Can't find one that says anything about logging off idle users)
I've also checked using Malware Bytes, SuperAntiSpyware, AVG, and Search and Destroy to make sure there's no spyware on my machine.
If anyone has seen this before or has any ideas please let me know.