As upstream bugzilla #7969 has been partially fixed for Linux platforms by bugzilla #336959, I've backported the checked-in patch to 1.8 branch. Please consider if it's possible to apply. See the attached debdiff.
-- Theppitak Karoonboonyanan http://linux.thai.net/~thep/
xulrunner_1.8.1.5-1thai1.debdiff
Description: Binary data
