i took my premed courses at a cc. i had to. i was a reentry student and could't afford a four year university at the time. as long as you can later show that you can do equally well at a 4 year institution and score highly on the mcat..you will be fine. i don't think many adcoms generalize about why a person takes classes at a CC. Many people had no choice and had to start at a CC and work their way up.
When I was at city college of san francisco there were quite a few students who had already gotten bachelor's degrees and were taking their premed reqs there. Almost all of them succeeded in getting into medical school.
If the highlight of your application is a 4.0 at a cc, then maybe they might look at you unfavorably, but if your success at a cc is part of your larger success on a whole, i wouldn't sweat it.
i went to a cc, transferred to a four year school, and will be starting at UCSF. Don't let anyone tell you that you will be looked down upon when they don't know your whole story.