One can define several keyboard layouts in the Keyboard Layout Handler settings
but only toggle between 4 layouts afterwards (that is one can only choose among the 1st to the 4th entry)
Can anyone confirm this?
Installed version: lxpanel 0.5.10.8-1
Lubuntu 12.10 (32 bit)
This bug has also been reported here: https://bugs.launchpad.net/ubuntu/+source/lxpanel/+bug/1082721.