Windows XP Service Pack 2 - Available on MSDN Universal Subscriber Downloads Only

MS have restricted access to sp2 initially, so if you have a Universal sub, you can download it from here. I Installed it on my machines over the weekend, and have no problems to report; ostensibly, changes are minor - there are no real new features that will immediately grab you, save for better Bluetooth and wireless support, and a Security Center that alerts you to Firewall and virus checker status. Note that, at the moment, the security center is quite useless. If you use 3rd party firewall and AV software, then you tick a box to switch off alerts - there's no integration with the 3rd party offerings. I imagine this will change, though - MS are entering the AV software business soon...