justpassingby

I see no obvious sign of a particular process which memory usage has increased. That's weird cause the commit charge does indeed increase.

The memory leak may very well be in something that's running at a lower level than the processes we see there. I don't know much about the kernel memory, I'll have to do some research on that. In the mean time I'll try to have some other microsoft techs to check this thread.

Do you remember having installed any new device 'round the time the problem began ?

You might try to uninstall any update from windows update you've done 'round that time to see if that problem could be linked to one of those.
edit : ok, don't uninstall any update yet, simply list the ones you believe you could have installed right before the problem began to occur and follow the instructions from my next post.