Microsoft says: "Support for Windows XP is ending on April 8, 2014. If you're running this version after support ends, you won't get security updates for Windows."
Not too long until that :/ I've been thinking what to do with family members with XP:s still in use and working perfectly fine for them. Almost grabbed cheap Win 8 upgrade offer which is available for this month still, but seems it doesn't work with P4/2.8GHz CPUs we have around. Missing the NX bit... soo.. I guess we'll let them be XP still and see what happens