Like it or not, Windows XP is no longer a smart option for personal computing. Microsoft went against its word and issued one last security update for the aging platform on Thursday, but new security holes that pop up will go unfixed and your personal data is at risk as a result. It’s time to move on. According to Net Applications, which measures market share by monitoring traffic across its networks, Windows XP’s global market share dropped by more than a point to 26.29% in April as users continued to begrudgingly migrate off of the 12-year-old desktop operating system. Some of those users apparently moved to another old OS, Windows 7, which saw its market share inch to 49.27% in April