Prefetch Blocking Bullshit

Firefox is starting to really annoy the hell out of me as I installed the prefetch blocking code into my site and it appears some browsers are still prefetching regardless. Best I can tell at this time it appears somehow about 4 visitors tonight prefetched without telling my web server "X-moz: prefetch" so this spec seems to look better on paper that in reality.

Checked the web logs and it definitely wasn't a rogue bot hitting my site with a fake agent string.

Hope it's a bug on my side but if not, I may just let them fall in the spider trap.