This happens to me occasionally, but I just close the browser and reopen it and the information bar (where I see the url of links that I hover over) comes back.

... but it's happened again and now I can't get it back. Any suggestions?

Thanks!

View > Status Bar.
Make sure it's checked ;)

1.
Right-click one centimenter or so to the right of 'help' in the menu back

2.
Click: Navigation Toolbar


See attached image




HTH

...
The Peoples Cube - correct opinion for progressives

back == bar

Feedback: It happened to me again, so I googled

Firefox lost information bar

... and this thread was the #1 hit!

I found that Status Bar WAS checked, so I just restarted Firefox and it came back.