Earlier versions of Firefox would let us specify how long to keep browsing history, and would then automatically clear out anything older than that. I can't find this option in Firefox 17. I've been having serious problems with FF, with frequent and lengthy pauses, which I finally traced to there being far too much browsing history being held. When I cleared out all browsing history, it seems to have resolved itself (crossing fingers). For the record: I had also tried starting in Safe Mode (w addons disabled), defragging my hard drive, radically reducing the number of open tabs, etc. Clearing browsing history was the only thing that made a difference. Can we setup FF so that it will automatically clear out old browsing history? It seems to be all-or-nothing in Tools > Options > Privacy. I have FF clear out the cache every time I close it, but I don't want to clear out all history; just past a certain time (e.g. 90 days). I'm aware that I can manage this manually through History on the main menu, but I would rather this happen automatically. Thanks in advance for the help with this.