I have been using it for a few weeks now- all ok.
However to put it into perspective I have used my windows laptop today, boy does it feel top heavy and slow in comparison. I do like vista - I like the look and functionality, but the only time I have felt comfortable with it was when it was running on my (now sold on) quad core desktop pc. To to get the best out of a standard Vista install - just boot it and go and make a cup of tea !!
So in fact rather than OK above I really rate the Mac, I will keep with it and teach myself more about it as I have done with the many flavours of Windows.
Wetter inside than out
4 hours ago