Hmmm at the moment I DM Tuesday 4e, play two different 3e games one on Wednesday and one on Sunday. I've been playing at least two games a week for the past 6 years, mostly 3e D&D, but we played gurps and nobilis for a few months.
In theory, a solid twice a week (one weekly game, and two every-other-week games). In practice, with irregular schedules for all of these games, somewhat less than that, but probably still averaging more than once a week. Which is how I voted.
I voted 'YES' since our group is local and good friends, and we try to play twice a week. Right now it's the summer holidays so all the Uni' student players are free or back home and my teacher friend is free, so we're playing a lot and playing a wider variety of one-off/mini-campaign games.
But as it turns out ... my three groups overlap membership, and sometimes there are these waves of times when everyone is available for all games, and other waves where no one is available. So there are a few weeks per year when I might run a game and play in a game in the same week. I find that tiring -- definitely not my preference.