Nope, good enough for me... :-)
My next box might be a Mac... but then again, AMD just introduced new double core CPUs that seem to perform very well (at a very steep price though)...
The main things preventing me from switching to Mac is the huge software investement I have on the PC side. I guess that some vendors could provide me with free upgrade to Mac (I heard Adobe does that), but contacting all the companies would be a full time job for a week...
Cheers,
Bernard