Try another approach to install things

.travis.yml

@@ -8,7 +8,10 @@ env:
 #  - DJANGO_VERSION=1.5a1
 before_install:
   - sudo apt-get update -qq
-  - sudo apt-get install -qq git libcairo2-dev libgtk2.0-dev libglib2.0-dev libtool
+  - sudo apt-get install git
+  - sude apt-get build-dep pygobject
+  - sude apt-get build-dep pygtk
+  - sude apt-get build-dep pycairo
 # command to install dependencies
 install: 
   - pip install --use-mirrors Django==$DJANGO_VERSION GitPython south django-registration whoosh translate-toolkit lxml