I marked 'other' but in previous polls I would have put down 4E.
The only game I'm playing right now is Warhammer Fantasy RP (3E) though we haven't gotten many sessions in due to scheduling conflicts.
My last 4E game ended when I finished university, so I've been taking a break from both playing and purchasing. I bought every book that was released until the PHB3, but haven't been keeping up with purchases since. The constant stream of new content gave me crunch-fatigue, and the new classes in the PHB3 were my breaking point.
I'm not necessarily done with 4E - we're on a break. I might pick up Dark Sun to mine for ideas, and I might cave and buy the MM3. I'm keeping my eye on the Essentials news to see if it rekindles my interest, and I'll definitely snap up at least the Red Box.
I've yet to play the system, but lately I've been buying up Pathfinder stuff like its going out of print. The idea of adventure paths had turned me off of Paizo for a long time, but I subscribed to Kingmaker on a whim and was so impressed I have since grabbed the Pathfinder Core books and GMG. Now I'm one subscription away from being a 'Superscriber' and am slowly picking up bits of the back catalog.
If I run into the advancement problems Emrikol mentioned with regards to Warhammer FRP, I might switch to running Pathfinder, likely E6.