franchi:~# dpkg -l hotplug hal udev dbus
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name                              Version                           Description
+++-=================================-=================================-==================================================================================
ii  dbus                              1.0.2-1                           simple interprocess messaging system
iU  hal                               0.5.8.1-6.1                       Hardware Abstraction Layer
pc  hotplug                           0.0.20040329-22                   Linux Hotplug Scripts
ii  udev                              0.056-3                           /dev/ management daemon