Package: polkit-kde-1 Version: 0.99.1-1 Please see bug #668890 [1] for a possible solution on the dirmngr side of this issue. I'm still wondering why an user who can well shutdown the entire box should be prevented to hibernate. Furthermore, oddly enough, in my case suspend doesn't need any further authentication, while hibernation does. Thanks Maurizio [1]: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=668890#60