centralized power supply

[electro]

Hi, 
just wanted someone else's opinion of whether the following is a good
idea or not. I was thinking of getting a super-nice 3-5Amp 12VDC power
supply from International Power then building a 1Urack space
distribution panel with coax connectors to power all the wall-wart gear
in a clean fashion (keeping the current requirement in mind). Do you
think this might introduce cross-talk/noise/hum?