After Update 38.0.1 History is no longer remembered, auto fill for commonly used addressed affected as well.
Firefox updated it self today, and since then, it no longer remembers my history. i can go to three web pages, click on the history tab and it comes up blank. Also, since it is no longer remembering my history, common web pages like my bank, no longer auto fill in when i start typing them, rather annoying since for years i go to a lot of the same sites over and over again with 2 to three letters in the address bar, also, IE still is able to do this.
In messing with this some more, it looks to be an issue for user accounts that do NOT have admin privileges to the local host. Running as administrator seems to work fine.