A while back an exploit was found that made Windows machines quite vulnerable to attacks. That might not seem so strange, except that instead of some researcher figuring it out in a lab, it was done by some folks playing around with WiFi in a coffee shop. Someone then asked whether the problem existed for folks who didn’t use windows to manage their wireless card, and in usual fashion I had no really good answer (when is there ever one around here).
Now the concept rears its ugly head again as Intel has plugged the holes in Centrino wireless management systems.
There’s your answer. Yes, and now no (until someone finds another hole).