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Although The Flashing makes a lovely point, I think it is worth mentioning that adding system updates to XP actually makes the computer run slower (excluding the Service Packs). Also from a computer specialist friend of mine, he had mentioned that Vista, although the new opperating system from Microsoft, will be as you say "scraped." In fact, Microsoft will take much of its resources and make an entirely new opperating system. Although Vista will be updated and whatnot, Microsoft will pay more attention to the new opperating system, as I believe Vista did not come out as well as it was hoped to be.
Soon also, Service Pack 3 for XP will be coming out soon, and I was told with blessings to buy it if I need to play the time-comsuming games the platform of the PC has to offer on my first Mac computer (sadly I ordered the Macbook Pro the day it came out on the 26 of Febuary I believe, and it will not be shipped until the 18th of March).
I personally find that Vista better uses your system resources when compared to XP. Face it, XP is coming up to 7 years. If you had an older computer, I'd push in the direction of XP, but there is no reason why Vista won't run well on your computer. I've been running Vista for about 1 and a half years (since RC1) and was an early adopter. SP1 really makes Vista better, and it should be rolling out to the general public soon, but you can find sites to snatch it off of.
Although The Flashing makes a lovely point, I think it is worth mentioning that adding system updates to XP actually makes the computer run slower (excluding the Service Packs). Also from a computer specialist friend of mine, he had mentioned that Vista, although the new opperating system from Microsoft, will be as you say "scraped." In fact, Microsoft will take much of its resources and make an entirely new opperating system. Although Vista will be updated and whatnot, Microsoft will pay more attention to the new opperating system, as I believe Vista did not come out as well as it was hoped to be.
Soon also, Service Pack 3 for XP will be coming out soon, and I was told with blessings to buy it if I need to play the time-comsuming games the platform of the PC has to offer on my first Mac computer (sadly I ordered the Macbook Pro the day it came out on the 26 of Febuary I believe, and it will not be shipped until the 18th of March).