Your question sounds like it is asking if the Forget button is more thorough than deleting everything on close. I think its just that the later is automatic and the Forget Button is for those who want to do it with Firefox still open. They do the same thing however in a same thorough way.

Forget does a lot more then clearing recent history as it also closes all open tabs and windows (the button has a panicView label), so you can't restore them.

• https://support.mozilla.org/kb/forget-button-quickly-delete-your-browsing-history
• https://support.mozilla.org/kb/remove-recent-browsing-search-and-download-history

What kind of data do you want to clear and do you want to keep any data like cookies?

Only history and possibly cache and cookies or also open tabs/windows?

Pillock said

I have FF set to delete all browsing history when ever I close Fire Fox, which is frequent. Apart from the fact that there is a delay in deleting history until FF closes is the Forget button any more thorough than my present method of deleting history. History is also deleted by Norton Utilities when ever I run NU optimisation at least once a day???

Thank you Cor-el.

That is most helpful. in answer to your question I want to be able , and try to, delete everything connected to my surfing. I have FF set to delete all history and all cookies when I shut down FF. This is very quick as it only takes a second or two to shut down and restart FF. (I do not accept third party cookies) I also have Norton Utilities set to delete all windows history, all browsing history, and all third party software traces. I regularly run utilities to bleach all the unused space which as you know is not unused at all and actually contains all the data that you have ever deleted. Paranoid? Probably. I work on the basis that if it can happen soon or later it will happen. All my friends have been hacked some of them disastrously. I work on the basis that the most secure devices are the off switch. Switch the computer off when you are not using it disconnect any data storage devices that you are not using when the PC is on. No hacker, however skilled can deal with that! That is not exactly rocket science is it? Needless to say if you do not have a real need for wireless systems then don’t use them stay hard wired. I would not ‘touch them with a fifty foot disinfected barge pole’! Think this week’s new hacking and data theft scandal sort of vindicates my point of view. Pillock

That is most helpful. in answer to your question I want to be able , and try to, delete everything connected to my surfing. I have FF set to delete all history and all cookies when I shut down FF. This is very quick as it only takes a second or two to shut down and restart FF. (I do not accept third party cookies) I also have Norton Utilities set to delete all windows history, all browsing history, and all third party software traces. I regularly run utilities to bleach all the unused space which as you know is not unused at all and actually contains all the data that you have ever deleted. Paranoid? Probably. I work on the basis that if it can happen soon or later it will happen. All my friends have been hacked some of them disastrously. I work on the basis that the most secure devices are the off switch. Switch the computer off when you are not using it disconnect any data storage devices that you are not using when the PC is on. No hacker, however skilled can deal with that! That is not exactly rocket science is it? Needless to say if you do not have a real need for wireless systems then don’t use them stay hard wired. I would not ‘touch them with a fifty foot disinfected barge pole’! I think this week’s new hacking and data theft scandal sort of vindicates my point of view. Pillock