When I click on any link, Firefox opens a new tab but the site will never come up.

I've tried Troubleshoot mode and refreshing Firefox but something in one of the recent updates has caused me to not be able to click on any link and have it open. Troubleshoot mode will solve the problem for a couple of clicks and then the problem returns even while still in troubleshoot mode. Firefox has become unusable at this point but I'd like to go back. Please help.