I have no issues with OS X, although I think it's advantages are blown out of all proportion by the faithful here... but then of course it's to be expected. On the whole though, I really like OS X. I definitely feel as a personal productivity solution it's superior to Windows, especially if you're a stand-alone person (i.e. you work from home, you're student, etc).
I'm a stand-alone guy in that I work with a very small group of people, but extremely high-end in terms of IT provision. Networking, security, etc are important considerations and reliability is absolutely paramount.
My software bugbears with Apple network goes beyond Chundles' issues. I did think I could get around them, but generally speaking this is definitely one area where things don't 'just work' and it became very frustrating on some occasions. True, if you're Mac-only and don't have a clue how to network, there's little simpler than Macs. For the more 'enterprise' among us, the Mac is a tad broken. But the hardware ended up the real problem for me. Pretty and very competitively priced these days but in terms of reliability and service for my business use it is... well, crap.
For home use I don't think a Windows PC can touch a Mac, except if you're looking for a gaming machine (obviously) or a HTPC - where I think Windows ironically does things better, at least for now.