third-party cookies
I Remove Cookies and add their senders to the Exceptions - Cookies list. However, the removed cookies instantly re-appear on the Cookies list. Examples: 2o7.net, adbrite.com. Cookies immediately reappear on Cookies list even when deleted while cable modem is disconnected. FF 3.6.13 on Mac OS 10.5.8.
Opaite Mbohovái (3)
Do you have the Targeted Advertising Cookie Opt-Out (TACO) extension? That one will automatically add permanent, generic, non personally identifiable cookies to the browser. Even if you delete one the add-on will replace it.
my password keeps loged on after I loged out how can I make it disappear?
chekes7, you should start a new thread for your question - https://support.mozilla.com/en-US/questions/new