Comment 2 for bug 1229630

More info from IRC:

<ack> free, when we create the computer in landscape, we need to associate it with the unit
<free> ack: why?
<ack> free, if we do it later (as we do now) the unit might have been gone in the meantime but we don't know that that computer was linked that unit, so we don't remove it
 free, which is essentially #1224877
<_mup_> Bug #1224877: Unit destruction not always results in the removal of the associated landscape computer <defect> <Landscape Server:New> <https://launchpad.net/bugs/1224877>