Support Solved Tumblr logs me out every 5-10 minutes in Firefox...

I am getting really fed up with this. I'm not hitting anything specific. Hell, sometimes I'm just trying to scroll down my feed, and suddenly I'm logged out.

I don't feel like using Chrome or my phone just to browse Tumblr.

 

Clear your cookies and cache. You'll have to re-login to any sites that you've set to remember you, so make sure you know your passwords before doing this. Ensure in your privacy settings that you're accepting cookies and that Tumblr isn't set as an exception, then log in again and see if the problem persists.

 

I figured it out, I think at least.

One of my add-ons, Ghostery, was blocking cookies for Tumblr. Changed that option, and so far I've been able to browse the site for more than an hour without logging out.