Another problem are the announcements in the lounges being generally a bit on the late side. At Arlanda, if you're on a BA flight, you need to get moving (well, going to the loo and then leaving!) when the screen announces boarding, not wait for the announcement. LHR T4 can be a bit that way, too. We all know why - I suppose if you're a frequent enough flyer to have access to these lounges, you should have enough 'nous' to not be late.