--- a/MozillaFirefox/MozillaFirefox.spec	Mon Jun 11 09:15:12 2012 +0200
+++ b/MozillaFirefox/MozillaFirefox.spec	Mon Jun 11 20:16:11 2012 +0200
@@ -111,6 +111,8 @@
 Requires:       mozilla-nspr >= %(rpm -q --queryformat '%{VERSION}' mozilla-nspr)
 Requires:       mozilla-nss >= %(rpm -q --queryformat '%{VERSION}' mozilla-nss)
 Recommends:     libcanberra0
+# libproxy's mozjs pacrunner crashes FF (bnc#759123)
+Obsoletes:      libproxy1-pacrunner-mozjs <= 0.4.7
 %define firefox_appid \{ec8030f7-c20a-464f-9b0e-13a3a9e97384\}
 %define _use_internal_dependency_generator 0
 %define __find_requires sh %{SOURCE4}