Turns out macintoshgarden.org switched to https for a few days but then reverted when it was causing some hitches, but TenFourFox would automatically try to connect to a nonexistent https site even if you typed http in the address bar.
Click for full size:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinQ4K5OEmt3Wb8cl0b6Q-2dByhnyn8QBAdzWWh2MGG29dNiZd7EqsLtPIJFSIDzcn61pEtYzAuWGUGG_NBItG9PeKp6SP8FtuXW32ZNvwuz2cNwk8GMEpoUEByu2DxKaQEdbBBCiDVoacn/s400/macintoshgarden+thread+1.png)
After purging my history of all macintoshgarden links and clearing out all macintoshgarden cookies, I still couldn't get TFF to connect to http. Finally this was the solution to my problems:
Click for full size:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1AFlsVU8ljSghJoS5Q-vUYboLwiJUo2oulQXzxcCZPxSHzEGcSslFdWhgDnxn2cYSvgJ_dw8Y17aNpY4CB61mUl5L4fx92_2wgYUBdX-Dj53IZSeY-sbykH6SF2curkTmVCn7Zvsq7c0-/s400/macintoshgarden+thread+2.png)
"That's done it. I edited the SiteSecurityServiceState.txt in my Firefox profile, deleting the macintoshgarden entry. Now I'm back in."
Kind of ironic the solution was in a thread I temporarily couldn't access in TFF, but all is well now.