Comment 12 for bug 349094

Seems it is still an issue: http://bugzilla.gnome.org/show_bug.cgi?id=591846

For me it works only if I set AuthRequired none and restart cups. That allows me to print once, then cups changes it back to AuthRequired username,password.

I don't think that this is cups fault, since the printer I am printing to really requires authentication, it kind of makes sense to change the AuthRequired setting.