Thanks again David. My /etc/xdg/menus/lxde-applications.menu file does look like the one you pasted, I only quoted the two lines that seem to directly related to the /etc/xdg/menus/applications-merged folder.
You got me on the right track with looking at my home directory. I added a new user as you suggested and for him (or her - whatever gender "test" is) the menu comes up complete with Navigation and SSB Radio. I couldn't find a relevant difference under ~/.config or ~/.local but did come across a folder ~/.cache/menus. In it I have three files with very cryptic looking names:
Code:
markus@markus-laptop:~/.cache/menus$ ll
total 72
drwx------ 2 markus markus 4096 Aug 2 21:08 ./
drwx------ 18 markus markus 4096 Aug 2 20:55 ../
-rw------- 1 markus markus 20309 Aug 2 20:55 14f43e70d0ff3cb33fa495db1c2479d6
-rw------- 1 markus markus 15194 Jun 25 18:48 5f8ff47c3640027acb705d4edde1f438
-rw------- 1 markus markus 15302 May 25 10:58 7f9c9073f35a9455c7554b02eae6a413
The most recent of these files (name starting with "14f43...") contained what looked like the definition for the Manta Menu - showing all entries without Navigation and SSB Radio (I assume these files exist in any nx installation so I won't clutter this post with its content). For my "test" user the equivalent file shows the full menu structure. When I relace my files under ~/.cache/menus with the test user file my entire Manta Menu content dissapears after logging out and in again (except for logout and run). However, when I replace the content of my 14f43... file with the content of the equivalent test user file it works and I get my full menu back!
I can also put new desktop config files in say /usr/local/share/applications and they will be picke up in the menu and the 14f43... file is updated accordingly. So I guess the bottom line is: it works but I have no clue why since the underlying config files seem identical between the test user and myself...
Btw... a *very* cool job on NX0.5 ... I was afraid that clumsiness and clutter would increase when climbing up the ubuntu release tree but it's just as swift as the old one with some very nice additions. Many thanks!
PS: As I writing the last paragraph I wonder whether having carried over my existing home partition from nx0.4 to nx0.5 could have caused the problem above?