[dev] [wmii] notifications only work from tag 1

I am trying to send notifications using 'notify-send' (libnotify) and I
found out they work only if they are sent from tag 1.
otherwise, I get the following message from dbus-daemon:

,----
| (<unknown>:5963): Wnck-WARNING **: Someone set a weird number of desktops
in _NET_NUMBER_OF_DESKTOPS, assuming the value is 1
|
|
| Wnck-CRITICAL **: wnck_window_is_on_workspace: assertion
`WNCK_IS_WORKSPACE (workspace)' failed
| aborting...
`----

Anyone has a clue?

--y