Clock in Taskbar stops working

[AWS]

I'm working with Windows 8 x64 for a few days now and several times a day, the clock in the taskbar stops working completely.

The system clock is running fine, see screenshot. Never had this problem with Windows 7 before.
I can't really tell which event triggers this bug, it seems to just happen randomly.
My system: Thinkpad T400, 8GB RAM, C2D P8700, Crucial M4 256GB.


Screenshot:

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[System]

I am having the same problem. I have trcked my problem down to being a bios problem although I don't know the fix.