Try to uninstall kgtk-qt3-trinity (and maybe gtk-qt-engine-trinity); see okd mail from Slávek:
------------------------- snip ------------------------------------------ On Wednesday 02 May 2012, Slávek Banko wrote:
Problems with crashes GTK programs I have seen only if I had installed kgtk-qt3-trinity (and related), which replacing dialog boxes. But with gtk-qt-engine-trinity, which only changes the appearance of gui widgets, it does not fall.
Note: These problems apparently not related to the update 3.5.13.1.
Slavek
Question: when will get kgtk-qt3-trinity not longer installed by sefault - too much trouble with gtk applications. I wasn't able to use
- lazarus-ide
- dropbox
- calibre
without using using sudo before I uninstalled the culprit.
Gerhard
Yes I recommend too to remove these theme engine package. On PCLinuxOS, it worked partly, but caused enormous document layout troubles... Better stay away! Instead, you can get a GTK theme that is similar to Plastik.
-Alexandre