Macbook Pro shuts down win xp and boots into leopard

I have noticed that a couple of times this week i will leave my machine for a bit running win xp and when i return the macbook has shutdown and rebooted into mac os. What is going on here? Anyone know? Thanks

Interesting, however I may have an explanation for this. You stated that you would leave your machine running but were not there to witness the actual shutdown and reboot.
1. You have the Windows Automatic Updates on Auto Update (This is by default)
2. You also have the default boot system for OSX at startup unless your press the OPTION key and choose Windows.
3. About 3 times a week (Sometimes More, sometimes less) windows will Auto Update based on availability of files on the Microsoft server.
4. What you may have witnessed is that, *while you were away*, Windows auto updated the files and went on a timed restart after installation.
5. Since your startup disk is set to boot in OSX, the computer boots up in OSX.
There is a high chance that you are witnessing what is stated above.

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Ahhh, enlightenment!
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Macbook Pro shuts down win xp and boots into leopard

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