This is my first question and I really hope that is has not been answered anywhere, as I could not find it during the search I performed.
I am working under Ubuntu 12.04 LTS and Gnome Shell (Gnome 3). I have installed Synaptic Package Manager, which is working great, but the problem is that its looks are awful. It looks like there is a classic theme applied to the synaptic windows only, except for the window title bar. Unfortunately, I cannot post a screenshot yet.
The same issue exists on the Adobe Reader (9.5.1) too, where the popup menu texts are barely visible on high brightness.
Could this happen due to the some missing gtk2 libraries? Any help appreciated.