If you are having some problems with lxpanel hiding not working right,
you may want to see if this bug report suggests you try something else.

http://sourceforge.net/tracker/?func...58&atid=894869

I occasionally have the problem that the panel will not un-hide,
requiring ctl-alt-backspace to recover.

This may be the problem or a contributor.

Interested to hear your results, if you heed the suggestion in
the bug report.