I use Apple's iMessage across several devices, including my (OS X Lion) Mac, using the recent Messages beta.
However, the application has some undesired behaviour.
When I quit Messages, it will relaunch itself when I receive new messages. This is incredibly distracting.
Is there a way to temporarily disable or mute iMessage (including the badge on the Dock) from just my Mac? I'd still like to receive messages on my other iOS devices.