I've used Firefox 3 for a long time, but recently I noticed it hasn't saved any history, and visited links are not coloured as such and the address bar doesn't have any recently visited sites.
I have AdBlockPlus, Flashblock and a couple of other minor add-ons (Foxytunes, forecast fox)
Any idea what is causing it? I could try turning one or the other off, but I think just disabling them doesn't help, and I like them too much to uninstall.
I have checked settings and its set to remember history for 90 days.