I was today on clients site that has Windows 2008 SBS installed with Symantec EndPoint Protection. Problem is that after I logged in tried multiple commands like services.msc, msconfig typed in "Run" but nothing was started. For the first 5 minutes i can click around Start Menu, choose some applications (non microsoft works, even control panel works). But then something happens that I can't click where I want.. i can click on Start Menu and get it active but i cant choose anything from there, everything is like blocked, i can right click on Desktop i can do many things but most of the left clicks is blocked. Even when i start TaskMgr i am able to see it but I cannot click it, can't activate it or anything. It acts very very weird.
It's newly installed system, with less then a month of when it was installed and it wasn't really used (been down most of the time). I suspect Symantec EndPoint protection might be faulty so when I go back there (Wednesday) I will uninstall it but maybe someone else have some ideas what may be happening. I doubt there's any virus or anything, symantec was installed right after setting everything up and running.
EDIT: Just to add CPU is at 0-1% (2 CPU's), and it has 10GB ram which is hardly used. SBS was set up for 5 people and it isn't even working for a month.
EDIT2: I've arrived at client location, uninstalled Symantec etc and Windows was still freezing up. Finally i disabled some services and after many tries and errors found out that if i disabled all Exchange 2007 services it works without problems. Anyone have any suggestions? I am slowly doing updates to Windows and everythimg and finally i will update drivers etc and then enable exchange and try again but maybe someone has some idea what's up ? :-)