I confirm what Luis suggested: I'm running 3.5.3 on karmic; I just switched /tmp to be a tmpfs mount and pointed Firefox's browser.cache.disk.parent_directory setting to stick the cache in /tmp. I now get this error message every time I start Firefox.
-- An error occurred while loading or saving configuration information for firefox. Some of your configuration settings may not work properly. https://bugs.launchpad.net/bugs/426412 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs