update-menus does not add a mosaic entry to my menu ?

[shaul]

        Hello,
Can someone tell me why update-menus does not add a mosaic entry to my menu ?
If this is not an obvious error, where should I look ?

[12:21:20 shaul]$ cat .menu/mosaic 
?package(mosaic):needs=X11 section=Apps/Net title="Mosaic" \
   command="/usr/bin/X11/Mosaic -geometry 627x468"
[01:54:34 shaul]$ cat /usr/lib/menu/mosaic 
?package(mosaic):needs="x11" section="Apps/Net" title="Mosaic" \
   command="/usr/bin/X11/Mosaic"
[01:54:43 shaul]$

                                                Thank you.