About 6, some days more (a lot more...) depending on if I'm out or working, if there's a Starbucks nearby, the weather.....
I'm working on cutting back though. Ideally I'd like to just have a cup when I wake up and another during the day. I've been able to stick to this intake for a few days a week for a month now. If I walk into a Barnes and Noble all bets are off though, which is probably not only unhealthy but also expensive, so I need to learn to suppress that urge.