Comment 1 for bug 485727

I seem to have the same or similar problem. I am running Ubuntu 10.04 as host and I am running Windows XP as Guest in VMware player 3.1. I am spending most of my time in the Windows XP guest. My blank screen saver is set to start after 5 minutes and lock the screen. I can go away sometimes for more than 5 minutes and the screen saver doesn't start. When I come back, I can start working and sometimes in few seconds, sometimes in few minutes, the screensaver suddenly starts and lock my screen even though I have been moving my mouse or typing (either in the guest or in the host). This is highly insecure and annoying since the machine doesn't lock the screen as expected and whoever can come and work on the machine after the screensaver was supposed to start and use the machine for minutes before the screensaver suddenly randomly kicks in.