Can’t Sign In

Don't know about the problem with your themes but one of my PS3s is getting the same error code.

I've just searched the net myself and apparently it's routine maintenance. This looks true as some of the forums I came across had posts from the exact same date last year. It seems to be only knocking out the 60Gig model but it's causing a lot of hassle with trophies and corrupting themes. 

…I say screw trophies cuz I figure those can be sorted back out easily, and I say screw themes cuz u can just re-download them…

=]

You probably mean blog.us.playstation.com, but they haven't written anything about the problems yet.

But their Twitter account mentions it: http://twitter.com/SonyPlayStation

Looks like this is a widespread problem but I haven't checked my PSN yet. If I were you guys I'd play games offline with internet disconnected because your game may revert your trophies back to 0% or your save game might get corrupted because of this problem.

I just had the same problem happen to me. I can't seem to sign on for certain games and its taken a few games completely off my trophy list. Every game I try I seems to delete the game off my trophy list. I have an old 80GB machine.