System Specs:
Macbook 13"
Dual core 2.4ghz CPU
2gb DDR3 Ram
Nvidia GeForce 320m Graphics Card

Every time I launch Spiral Knights from steam it constantly opens the game. It starts running about 5 or 6 instances of the game at once, and lags out everything on the computer, forcing me to restart the computer.

Are there any solutions to this problem?