Strange behaviour of LXDE menu with V6.7.1

["Werner P. Schulz" <fly@wp-schulz.de>]

I like the panel at the top of the screen. But if I select 'Panel
preferences => Position: top', I have no LXDE menu, only an empty frame
at the left edge from bottom.

http://www.wp-schulz.de/.images/LXDE-Menu-Error.png

This doesn't occur with 'Position: left, right or bottom'

There is no difference, when I upgrade the LXDE stuff from stable to
testing. I cannot find the difference to older Knoppix versions. In the
LXDE forums nobody describes this error

-- 
Greetings Werner