Bulk capacitor noise: They charge up and discharge, helping the main power supply to deliver required peak electrical current upon demand.
Digital devices tend to have very..."spiky" electrical current usage, and this causes...
^Could it be some sort of "Bulk cap noise being amplified by the heat sink"? And yes, capacitors can vibrate in the audible range, sometimes--in these cases usually some low multiple of AC line frequency (i.e. 60 Hz, 120 Hz...).
I'm thinking it's a design, uh, issue. My 9300 (17 inch widescreen) has the same type of thing. I think it's just the uneven backlighting across the display--the bottom corners have the "shadow" for me, and I was told it's...
I also been thinking what if its my moms Wireless Adapter?
As I said, plug it (your mom's computer) in directly to the router using an ethernet cable. See if your problems get better, worse, or stay the same.
I don't know the Linksys webserver very well: I'm using a D-Link right now. Someone around here will help you out with that.
However, I have another suggestion for you to try: try plugging your mom's computer directly into the router...
Woah! That's different---I didn't know you were post-processing your signal.
You lose detail when converting to VGA--probably not much with a very good quality conversion box, but its still there. Especially at high resolutions.