I also posted this in the linked thread.
I stumbled on this tread after I began experiencing the same problem.
I have a Logitech VX Revolution laptop mouse, a current model Macbook Pro 15" (2.5ghz) and am useing a netgear wpnt834 mimo g router.
Whenever I transfer files to my server over wireless the mouse stops functioning properly (some of the signal is lost, so it feels like it tracks slower, it also misses a portion of the click and scroll presses)
When I originally noticed this problem my router was set to channel 9, on which I generally get the best performance. I decided to try switching the channels, and found that while my transfer rates were a little lower on channel 6, the mouse problems seem to have gone away.
To help diagnose this problem, and hopefully find a more concrete solution, it seemed to present strongest to me when sending a lot of data, although it did still happen to a lesser extent when receiving data. So my educated guess would be that the airport extreme card is putting out interference when transmitting.