PlayStation Network 14 hour maintenance
Brace yourselves, PlayStation will have a scheduled maintenance from today, March 4th, through 2am Pacific on Monday, March 5. The maintenance will disconnect all players and will not let anyone sign in until the maintenance is complete.
I'm thinking PSN/SEN is fixing a couple things with PS Vita's synchronization with the PS3. You currently can't see your friends online from the PS3 if they're on the PS Vita. You also can't see PS Vita Trophies on your PS3. Now what I would really like to see is Party Chat on PS3, but I'm sure that won't be for some time.