My first post on Mac v/s Windows was way back in 2005. I was a latecomer in the old debate - if you are in orkut ( which i don't use anymore), you can go through  lively debates among Mac aficionados and Windows loyalist in a community i moderated called Mac v/s Windows. So much have change from then and now-  Microsoft has already released  Vista and it's set to release another OS soon( Windows 7) and Apple too have upgraded its OS ( far more frequent than MS) and the latest Apple's Snow Leopard is the reason for the new but old debate; except this time the fight is no longer about consumer market but businesses- Microsoft territory.

Going by what PC World (they also have a sister publication called Mac World) says andwhat silicon.com published recently, adoption of Mac OS is still out of question. The reasons though have changed. IT heads or more commonly known as Chief Technology Officers are not ready to shell out extra cash in downturn. And that seems to be the only reason keeping them from moving to Mac now. Follow the article here http://software.silicon.com/os/0,39024651,39554596,00.htm