[Gentoo] Firefox upgrade annoyances

First, there was that broken file in the digest, because I had downloaded an older version but it got updated on the mirrors.

Next, my middle clicks to open URLs don’t work. That in itself is enough to convince me to downgrade, because it’s critical to not wasting tons of time erasing and re-pasting URLs in the address bar. I’ll try looking for answers this weekend, but if I don’t find any, back to 1.0 I go.