I can no longer see any of my browsing history and did not choose to have it that way
When I click on "show all history" there is nothing in the window. One time I tried to selectively delete SOME of the history and ever since then, nothing.
Old version of Firefox 3.0.19, Old Mac on Tiger operating system OS 10.4.11
Opaite Mbohovái (1)
Sounds like a problem with the file places.sqlite that stores the bookmarks and the history.
I'm not sure what the effect of deleting places.sqlite in Firefox 3.0.19 will be. So be sure to export (backup) your bookmarks (and check the file content to be sure) before trying anything.
See http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox