If, on April 15th, you were experiencing issues of serious lag or unable to save or even connect, it wasn’t DE’s fault or the game. They were being hit with a Denial of Service attack. I noticed it in the afternoon just browsing the Warframe forums. Fortunately, around 10PM when I could not connect, I was in the middle of trying to forma a weapon in preparation of Update 13 and Melee 2.0. Didn’t lose anything that would cause a momentary lapse of reason (for you Pink Floyd fans out there. Excellent CD, by the way). Follow the link below to get the official statement.