When I ran gpk-update-viewer from the Gnome menu, I got a dialog box that said:
All software is up to date
There are no software updates available for your computer at this time.
This was not precisely true. Actually, the network was down because I'd just installed the OS and hadn't yet selected a wireless network. gpk-update-viewer should be smart enough to know that the network is down and display a more accurate and helpful message. I did later get a "Software source download failed" message, but given the assurance of the first message, some users may be misled into thinking their system is safe when they actually need to download and install published security updates.
I experienced this with gnome-packagekit-2.30.1-1.fc13.i686; the same problem occurs with gnome-packagekit-2.30.2-1.fc13.i686 when I intentionally disable the network.
I've applied this to upstream:
Author: Richard Hughes <firstname.lastname@example.org>
Date: Thu Jun 10 11:02:39 2010 +0100
Add a modal error box to the update viewer if there is no network. Fixes rh#602507
:100644 100644 a477f5d... 2b807fa... M src/gpk-update-viewer.c
I can't backport to F13 as there are new strings which would be a break. Thanks for reporting this bug.