After upgrading to the latest version on our production server the CPU has jumped up to about 30 to 40% constantly, and a lot of our customers could no longer connect to our server. We have on average 2000 people logged in at any time, but didn’t have a problem before installing 3.6.3.
We have now reverted back to 3.6.2 and the problem has gone away. CPU usage is back to 2%.
Also the RAM usage was extremely high and has now dropped back down to 130mb (it was up around 600mb with the latest version).
We would love to upgrade because of the flash cross domain socket server updates… but unfortunately this problem is preventing us.