Im Now on my second mac
The first mac which was last years suffered a problem after 3 months of use ,dead inverter board
I personally think it was something to do with windows as I read more and more it seems that the power management is far less in tune with the hardware than when the macbook was being run in OSx
one thing i noticed was that in OSx it ran cool and quiet
under windows battery life was much shorter and boy did the thing get hot as in it was uncomfortable to touch
Ram was an issue for me too with solidworks I ran a large assembly on my old dell 1.8ghz with one gig of ram and whilst there are definitions of slow it was indeed slow but could just about work on it
There seemed to be a bottleneck somewhere as the macbook pro with 2gigs of ram the same assembly just threw me consistently out of solidworks citing the ram was all used up