In the very early days it was possible to save bookmarks for the same page, but that was considered a bug and was removed. Now you can use copy/paste to duplicate them in the Library dialog (Ctrl+Shift+b or "Show All Bookmarks"). For example, select a bookmark in the right pane, Ctrl+c Ctrl+v then you can rename the copy and move it where you want it.

By the way, I would be remiss if I didn't add:

Version 36 is not secure; Mozilla discloses security flaws after each new release. Is something holding you back from upgrading to Firefox 38? Please let us know so we can suggest solutions or workarounds.

You can "drag" a bookmark into the Bookmarks Sidebar to save a duplicate. Just grab the icon on a tab, with the Sidebar open, and drag to where you want the new / duplicate placed. Or drag it onto the Bookmark Toolbar, then open the Library window to move if to where you want it.

jscher2000 said

In the very early days it was possible to save bookmarks for the same page, but that was considered a bug and was removed. Now you can use copy/paste to duplicate them in the Library dialog (Ctrl+Shift+b or "Show All Bookmarks"). For example, select a bookmark in the right pane, Ctrl+c Ctrl+v then you can rename the copy and move it where you want it.

This solved it. I usually don't update my firefox because after that, a lot of my add-ons became incompatible. They don't have newer versions for the new firefox. But I will give it a try for firefox 38.

You should also check your plugins for updates.

• Shockwave Flash 15.0 r0
• https://www.mozilla.org/plugincheck/