Sony’s informing the public that yet another PSN maintenance will happen on Thursday, March 1st, and will last for 14hrs.
Once maintenance is ongoing, no one will have access to the network, as it’ll send everyone offline. Work begins at 8:00AM PST/11:00AM EST/4:00PM GMT/3:00 AM Friday AEST, and is expected to run through at least 10:00PM PST/1:00AM Friday EST/6:00AM Friday GMT/5:00 PM Friday AEST.
No reason was given for the darkness, but you could always voice your rant here.

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Ernice Gilbert Reply:
February 28th, 2012 at 2:18 pm
Yeah, I know how you feel. It’s really ridiculous the frequency of such “maintenance”.