On some internet connections, I have problems to login on this site.
One is kind of 'open free internet' we have at work and then also some public hotspots etc.
On the connections where it is not possible to log in, some traffic can be observed, I am also receiving a cookie, but the authetication fails.
Here it seems not to be possible. Cookie is received, but it kind of looks like the authentication process times out or so.
I have tested number of other forum sites and webmails etc, no problem elsewhere.
Is there some very special mechanism used here which does prevent log in on some slightly slower connection?