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.
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.