Locking screen when lid is closed (Dapper)

[Nils]

> just check the checkmark in yourr screensaver preferences, in dapper the
> power management is completely done by gnome-powermanager, it triggers
> the screensaver after suspend, but uses only the settings you enabled in
> the screensaver. it might not be the right behavior,
> https://launchpad.net/bugs/39448 deals with that issue.

Problem is that suspend does not work with my laptop, so screensaver
does not start running