I encountered a strange undocumented feature with the latest 15" MBP. On Saturday I ran it on the battery for an extended period of time; drawing the battery down to 40%. When I got home I plugged it in and continued working on it. On Sunday I noticed that the Battery was not and had not charged over night. I tried rebooting (cold), unplug/replug, turning it off, etc. Nothing could get this thing to charge. Finally I removed the battery and that seemed to kick start the recharge.
Being only a couple weeks old I was wondering if this was a bug in 10.5.6 (or what ever the latest version is). I did see posts about a change in the options available in the latest version. Has anyone else with the new unibody MBP experienced this issue?