Cannot save in GTK Programs

I am having trouble with all GTK applications such as Firefox or Inkscape as they crash when I attempt to use the "Save As" dialog or "Open file" dialog. Linux luthic 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Ubuntu 12.04.1 LTS Filename: pool/main/t/tdebase-trinity/tdebase-trinity_14.0.0-0ubuntu11+r821+pr2~precise_all.deb Size: 62810 MD5sum: d9ca989acaca5b0db1ccc62584af17b5 I have attacked backtraces of the programs when they crash. What else would be useful?