For instance, it's really cool being able to watch movie in your ps3, with getting cut off in the middle of your viewing session and getting a message like "HTTP (500) Media Server Error" can be very painful indeed. While it is possible to immediately restart the same movie, it still gets connected after minutes.

PS3 HTTP Error 500, 400: learning the fix

Many speculated that the problems like ps3 http error 500 or ps3 http error 400 may be related to network connectivity, but you can never be too sure. For instance, you can still get cut off while in the middle of watching a movie, and yet you are never signed off from PSN. This clearly rules out the online connectivity issue from the equation.