So it shows me only my online uptime without sleep or hibernation time - it's OK, but why in CMD "systeminfo" value Boot Time still changes (when I sleep and wake up my machine) and shows incorrect data (should be 2009-11-12 not 2009-11-16)? Any ideas? (Today date: 2009-11-19)
I see this problem too (Win7Pro x64). The event viewer confirms that the system last rebooted several days earlier than the Task Manager or systeminfo reports it rebooted. (Also, I leave a lot of windows open all the time and would have noticed if they had disappeared due to a spontaneous reboot.)