Fix Firefox Font Rendering Problem in Snow Leopard

August 30, 2009

Upgrading my iMac to Snow Leopard, one of the oddities I ran across was that in Firefox 3.52, a number of pages had their normal fonts replaced with “Courier” in odd places. Opening Font Book, I noticed that a number of fonts commonly used on web pages (Ariel, Verdana, etc.) showed that “duplicates” were present.

I right clicked on each of these, selected “Resolve Duplicates” and restarted Firefox, after which everything was back to normal.

No idea what the cause of this was, just thought I’d toss this out in case anyone else runs into it…