[gtkmm] very little space between menuitems

[Daniel <dss home se>]

Hello

I use Gtkmm-1.3.23 (gtk+ 2.0.6) on a redhat-7.3 system. I use the default gtk+ theme. When I create a menu using the Menu_Helpers I get very little space between menuitems, as you can see on the following screenshot:

http://gspeakers.sf.net/menus.png

Is it the gtk+ theme, font or something else? It looks the same in the gtkmm examples and also in the plain gtk+ menu example.

Daniel Sundberg