If you were looking to buy something on the PlayStation Store or make a new PlayStation 3 account, you better do it fast.
Sony has confirmed to IGN that the PlayStation Network will undergo maintenance Thursday, Feb. 2, 2012, from 6 a.m. to midnight Pacific. During this time, the PlayStation Store, account management and PlayStation Home will be unavailable.
http://ps3.ign.com/articles/121/1217739p1.html