Sony has released update 4.41 to deal with system stability issues. The update was announced via Twitter.
PS3 software update v4.41 is coming today, it's a minor update that will improve system stability.
— PlayStation (@PlayStation) April 25, 2013
System Update 4.40 has been to blame for many a crashed or frozen console, with some users reporting a loss of data and game saves. Hopefully 4.41 fixes some of the concerns Gamers have been having with their consoles lately.