[UPDATE 2] It appears as if the PSN is back online.
[UPDATE] On PlayStation site “The PlayStation Network is down”
For the second straight day, the PlayStation Network (PSN) is experiencing technical difficulties. Yesterday we received word, that the PS engineers were hard at work, but so far there have been no updates on the status.
The error has been tied to the Call of Duty: World at War Map Pack uploaded onto the PSN. Many user’s are reporting the incident happened shortly after the Map Pack and Call of Duty 1.04 Update were installed. We’ll keep you posted on any new developments on this post with updates.
If you’re having technical difficulties, please call Sony’s Hotline:
Sony Computer Entertainment America
M-SAT 6:00 a.m. – 8:00 p.m. PST
Sunday 7:00 a.m. – 6:30 p.m