Microsoft released the long-anticipated Windows XP Service Pack 2 (SP2) to manufacturing mid-day Friday, just two days after unknown delays temporarily stumped its wrap. Although Microsoft's signed off on SP2 -- a major update to Windows XP that devotes considerable effort toward tightening up the operating system against security threats -- it's not yet offering the upgrade to end users. SP2 will post for downloading next week, said Microsoft, but it's urging users to not flood the Windows Update servers by retrieving the approximately 80MB file on their own. Instead, the Redmond, Wash.-based developer is trying to convince users...