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.