I've been told anywhere from 1000 to 6000 miles. I've got 2800 miles on my first road bike (got it in May). The chain doesn't have play in it that I can tell, I could bug the LBS for the measuring gizmo, but I guess I'm looking for some kind of rule.
I don't cross chain it, try to lube 2x a week, and clean with the parks chain cleaning gizmo once a month. I figure I'll hit 6000 in February-should I just wait till then to overhaul everything? And do i really need to replace the freehub thingy at the same time?