Ask HN: Macbook Pro and Windows XP?

To any existing MB Pro owners: I'm about to buy the MB pro and was wondering if there are any caveats I should be aware of regarding performance and component compatibility when dual booting Win XP and/or Ubuntu on the machine.

Do the trackpad along with things like the mic/camera perform as they are supposed to or is some stuff locked in to OS X?

I tried looking this stuff up but the blogspam is just ridiculous.

Any clarifications are welcome. Thanks.