So I have a Macbook Pro that has a weird problem trying to go to sleep. Essentially, I'll flip the lid down, and it'll try to go to sleep. As soon as the blinker shows it's about to go to sleep, I hear whatever internal sound signaling that it's waking. If I don't flip it up, it'll wake (I assume), then realize the lid is down, try to go to sleep again, then do the same thing again. If I do flip it up, it is definitely waking up. I don't have bluetooth enabled, and it happens when I don't have any USB devices connected. I disabled "wake for ethernet..." and have tried it with all programs exited except quicksilver. The only thing of note is that I have it only on the adapter and do not have the battery plugged in. And it's the MBP released last summer. Any ideas why this is happening?