dbus 1.6.8 breaks VBox :-(

[Warren Block]

On Sun, 14 Apr 2013, Michael Butler wrote:

> Apologies if this has been mentioned before but the update from dbus
> 1.4.14 to 1.6.8 breaks the "file open" dialogue when trying to attach a
> new ISO file to a VM for installation.
>
> The only "fix" I've found so far is to revert dbus to 1.4.14 :-(

Just tried, and it works here on amd64 9-stable with 
virtualbox-ose-4.2.6.  Could you have updated the operating system but 
not yet rebuilt the VirtualBox kernel module?