After udating "dbus" packages to version 0.60-6,
"avahi" and
"hal" daemons fail to start up correctly during system boot.
This is very annoying when logging in to a "GNOME" session
as various applications such as the "gnome-power-manager" stop
to work. Media detection is of course also out of order.
The breakage has appeared sometime between version 0.60-3 which
works correctly and the current version. Downgrading to version
0.60-3 allows to recover a working "GNOME" desktop.
No problem here on an Itanium workstation (IA-64) with dbus 0.60-6,
gnome-power-manager 0.3.4-1 and avahi 0.6.4-3.