while waiting I tested to use fbpanel but there's another problem:
$ fbpanel error is /usr/share/fbpanel/plugins/wincmd.so: undefined symbol: a_NET_WM_STATE fbpanel: can't load wincmd plugin fbpanel: can't start panel
I can't use my arch distro normaly , so can anybody help me please ....
you could try perlpanel, kde, gnome, xfce.
Or you could just skip the panel, and save the cpu cycles