Any C note I hit on my guitar buzzes. Nothing else does mind you, so I don't think it's my action (I'm probably totally wrong). But at the same time, I play with very low action. I don't know the measurements but... loooooooooooooooow. Looks like it couldn't be more than 2mm. The buzzing is extremely fast paced. It doesn't sound like loose string buzzing, but high frequency buzzing. Anyone know how I might be able to fix this without raising the action much (preferably not at all)?

I use a Jackson DK-2.
Is it at a certain fret? Or is it every C that can be played on the guitar? If the latter is the case, that particular note may be vibrating something on the guitar or something.

If it's the former, then it may be an action issue.
Fender MIA Telecaster with DiMarzio noiseless single coils
-Fulltone OCD
-Ibanez Analog Delay
-Dunlop Crybaby Wah
Fender Blues Junior
Fender MIM Jazz Bass with Noiseless pickups
Mesa Walkabout
Epiphone AC200SCE Acoustic