[SOLVED] Firefox cache vanished

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http://forums.fedoraforum.org – On my laptop Firefox used to store the cache in ~/.mozilla/firefox/qav0z3zp.default/cache. At about FF 10 it started storing cached items in ~/.mozilla/firefox/qav0z3zp.default/cache/(gazillions of numbered subfolders). With FF 12 the cache disappeared altogether; there is no cache folder. about:cache tells me it's ~/.mozilla/firefox/qav0z3zp.default/OfflineCache, but nothing ever appears in that folder either. There is a file index.sqlite in there that is 256 Kb and stays that size, but nothing else. I tried making a cache folder and adding to about:config browser.cache.disk.enable v (HowTos)