The say they are at the testing stage of returning service. The PlayStation network has been shutdown since April 20 2011 after they learned they learned of a network intrusion. Information on the actual Intrusion is limited by security considerations and criminal procedures. Latest Sony post under related link said the planned procedure to restore services regionally first week of May 2011 has been delayed while it is being tested. There also was several messages about starting a program to provide customer bonuses. The posts at the related link will have the latest and best information that has been provided directly by Sony and is the only source for new information available. A number of Sony's earlier posts can be found in links under the related question
it is not just maintenance that shut the network down. The related question will be updated with the latest information
the maintance will last from 8:05 a.m. to 8:30 p.m. pacific time that is when they are doing the maintance thing.
8
it depends on how fast both ps3's are
It will take about 3 to 5 days
This error occurs when the PS3 is down for maintenance. On March 9, 2011, the Network will be down most of the day for routine maintenance.
it takes about 6 hours
couple hours
It should not take long, if you are having trouble see related questions answer
Weeks to months.
about 10-20 seconds.
Sometimes the system is under maintenance for various amount's of time, but if you problem lasts over a day you are unique