In general, Laptop computers are notoriously incompatible with Microsoft Operating systems. That is because they have varying Driver requirements specific to the Mobile design. Microsoft can't seem to get this right in their operating systems.

I would not measure the stability of XP SP2 based solely on the findings of a few Laptop users, UNLESS, you are installing to a Laptop.

UD, how are you going with SP2 on the Desktop? Don't leave us hangin' bro?