I use LXDE and also use Shotwell to manage my photos. Until recently, all was fine, except now the tree menu on the left hand side of shotwell shows very faint/invisible fonts. If you select/highlight a line, it is then visible, but obviously not very useful. I re-installed Pango and Shotwell with no effect.
If I log out of my LXDE session and log into Gnome, Shotwell works as expected.
The same (or very similiar - GTK?) tree menu in Evolution works fine on LXDE.
If the above image doesn't display, it's supposed to be here: http://pastebin.sabayon.org/pastie/9465
Any pointers on where to start would be appreciated, thanks.