I installed stellarium just to check out this application (as one of our friend is an stellarium addict)
sudo pacman -S stellarium
but after running the application, I immediately noticed that the menu is broken.
So i think that it is a video driver problem.
lspci |grep "VGA"
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03)
I solved the problem by installing driconf and set enable texture tiling to "NO" then re-run the stellarium application.
Everything seems to be working now.
sudo pacman -S driconf
system-->administration->Driconf
stellarium ::A stellarium with great graphics and a nice database of sky-objects
driconf:: A graphical configuration tool for the Direct Rendering Infrastructure