What level of CPU usage are people getting using CGMiner 3.1.1?
I've got a Win7 x64 setup with a Core i5-3570k and getting about 25% CPU usage, hashing with just one USB Block Erupter.
http://pastebin.com/HUhNYA6g96.3% idle at 800MHz cpu usage...
Running 9 x cairnsmore fpga's via a couple of USB hubs.....