After a long day of poxing (and relaunching pox after several crashes) I found my computer running a bit slow. Turns out Pox doesn't like to close when I hit the exit button or "end task" it when it crashes. Sony's launch pad prevented this multiple application instances issue by turning the play button to a grayed out "playing" button when the application hadn't closed properly. I've tried: Alt-F4ing hitting settings > quit in the client Using end task in the task manager and all of them leave a ghost pox running in the background. Not sure if this belongs here or in bugs.
