According to European forums, Sony will be performing maintenance on the PSN starting on tomorrow morning, more commonly known as Thursday, the second of February. From 9AM to 3AM EST in the USA and 2PM GMT until 8AM Friday morning in Europe, many PSN systems will be down. The maintenance will affect the PS Store, Customer Account Management and Registration services. Games will apparently still function. To the absolute chagrin and outrage of many, Playstation Home will be unavailable. Plan your life accordingly. Check out the official Forum announcement here. Although this announcement was only published to European markets, it usually affects the USA as well.