Simply plugging in my older Microsoft MultiMedia Keyboad 1.0A and some crappy old mouse, both of which are wired with PS/2 connectors, resulted in the problem going away. This kind of sucks because I like using my keyboard and mouse and I dont intend to leave these old things connected to my pc.
I gather this means that the bug, that seems to have floated around for what 6 yrs, still hasn't been resolved?
Umm... It doesn't appear to be a CentOS issue .. Have you tried re-synching the keyboard to the receiver? Also, low batteries can cause similar errors in wireless keyboards.