Obvi­ously, the 8001050F PSN error fixed itself when the inter­nal clock date changed from Feb­ru­ary 29th to March 1st UTC. If the time dis­played on the XMB is still incor­rect, you can fix it by adjust­ing time set­tings man­u­ally or via the inter­net. I just took a quick look at it before going to work and I could sign in to the PlaySta­tion Net­work with­out expe­ri­enc­ing any error mes­sage. I’ll have to check whether I’ve lost any data but I don’t think so because I really couldn’t do anything.

If you started a game while this hap­pened your local tro­phy col­lec­tion may be blank. Just get a new tro­phy and your local list should be refreshed and alright. If it doesn’t work, you’ll have to wait until Sony makes an offi­cial state­ment regard­ing this issue. Have fun once again.