Is there a way to permanently disable checking for updates? I don't want to update (and I don't care what people think about that), but every 5 minutes an update notification pops up that needs to be closed, and it is getting really annoying. Again i don't want to update and there is no option to disable checking for updates, only to automatically update whenever firefox wants to ruin my day or to bother me until I allow them to ruin it.