I'm getting a "Suspend Failed" notification bubble popping up when I resume from a successful suspend with gnome-power-manager-2.13.92-1 in FC5 devel. This seems less than ideal :-)
Hi, Do you have any relevent error messages in your /tmp/xses-$(whoami).* file?
Looks to me like it's a kernel bug with losing messages upon resume so adding kernel-maint as Cc. Please see upstream bugzilla (e.g. http://bugzilla.gnome.org/show_bug.cgi?id=332888#c6 comment 6 and 7) for details.
False alarm regarding comment 2 - this seems to exclusively be an user space issue (see upstream bug) so I'm removing kernel-maint for now.
Should be worked around in tomorrow's rawhide. The bigger d-bus issue should be filed separately and worked out independently of this bug.