I have had a bit of a rant with Vlad over at Vista SP1 vs. XP SP3 Performance Stats: Flawed Samples or Market Reality? and the comments are good - the communication is very worthwhile, but I thought I would share some of the "what was it like with Windows XP" reality. That does not excuse the issues people see, but rather highlights the fact that with XP, it took some time for things to bed down and hopefully what you are seeing with Vista is a more responsive Microsoft and partner eco-system. Complaints about Whistler (Windows XP and 2003) come in the form of performance, adoption rates, application compatibility, relevance - all things people are complaining about today with Windows Vista. I will say it again - ONLY DEPLOY VISTA IF IT MAKES SENSE FOR YOUR BUSINESS. What is more, only deploy Windows XP on new machines if there is a compelling reason to NOT deploy Vista . Remember that if you buy Vista Business / Ultimate and downgrade you can then re-load Vista at a later date without having to re-buy...