Even though Microsoft announced an end to Windows XP last week, the company has pledged to support XP though 2014.
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At the link below, InformationWeek says: Microsoft may have little choice but to support Windows XP for an extended period, given that the majority of its large business customers have not upgraded their personal computers and laptops to the newer, Windows Vista operating system.
Many companies have balked at Vista's cost, resource requirements, and lack of compatibility with older applications.