Hello, I'm using a 2009-model MBP (2.8 GHz Core 2 Duo, 4GB RAM, GeForce 9400M active). For some strange reason, the computer won't automatically go into "sleep" mode after I use certain Internet-connected applications (specifically Vuze, and the StarCraft II Beta client for Mac). It goes to screen saver after a certain time, but it won't go to sleep until after I reboot the computer. I checked Activity Monitor, but I'm not seeing any abnormal activity... Thoughts anyone? Any other Vuze users or StarCraft II beta testers experiencing the same issue?