There are options under Tools->Clear History, like the time range. Click the “details” tab and you’ll see option boxes to click, you can select what you want to scrub.
If you have release 4 or greater, there is a do not track function provided. My version is 3.xxx, and I go into the options and remove cookies manually. I don’t know if this solves my problems; but it’s an attempt. Also make sure you have a good anti-virus. I have blocked Google, and use other browsers. Hope this helps.
Go to “preferences.privacy’
Check ‘Tell websites I do not want to be tracked’.
Under ‘History’ select “Never remember history”
I like and have been using beef taco.
also I suggest the “No Script” addon it saves a lot of grief.
There’s a good add on called Do Not Track Plus. Use it in conjunction with AdBlock Plus and FlashBlock
May I suggest adding the “Better Privacy” plug-in which deletes persistent cookies. (flash cookies)
Abine.com’s DoNotTrack is good. Also Adblock Plus.
Additionally, if you decide to visit ‘certain’ sites and want no record, switch FF to the Private Browsing mode. I am not sure at which version they added it. I am currently running FF 11.
The Chrome browser has an incognito mode that might be what you are trying to do: