It is less than a month away, and it is the date that Microsoft will end support for Windows XP SP2. That means that Microsoft will no longer be testing newly discovered vulnerabilities to determine if Windows XP SP2 is affected, nor will it be developing any more patches or updates in support of Windows XP SP2. You have T-minus 29 days and counting to install SP3, or make the move to a newer OS, like Windows 7.