Just to let everyone know that there is known problem with BTOpenzone logins at T-mobile hotspots in Germany at the moment.
My login hasn't worked in LH lounges for about a month now, but there is no time-to-fix from BT I am afraid.
My Travel Blog - http://boardingarea.com/milesfromblighty/ - with a European Flavour. (The link above is to my blog or a blog to which I am a regular contributor. FT rules require that I disclose that in the post.) (Member Number - 196)