The Disadvantages of Windows XP Operating System

Rendered Obsolete
Windows XP is not only past its prime, but it has been rendered obsolete from the release of the newest contender, Microsoft Windows 7. Everything Windows XP could do, Windows 7 does it better and faster.
End of Its Life-cycle
The shelf-life of any Microsoft operating system is seven years. For Windows XP, the mainstream support ended in 2009, leaving only its extended (paid) support. Service Pack 3 is the last of the updates. It will be the only available Service Pack after July 2010. Very soon, you'll need to rely on third-party vendors to supply you with updates to keep XP up-to-date and protected.
Unwavering Expense
Considering that Windows XP has been forced into retirement, it's a little surprising that the cost of purchasing one of the few remaining copies hasn't gone down by much. It's still expensive. Also consider that some of its direct competition, such as Ubuntu and Fedora, are going strong. These operating systems have all of the bells and whistles and features to rival everything in XP, and they're free.