Firehol and Youtube don't play nice.
 

Okay, so I've been having problems with youtube not displaying correctly. I thought it was a firefox upgrade problem, but then narrowed it down to firehol or dansguardian.

In the dansguardian exception site liste, youtube is listed to pass every time, so I think it must be firehol dropping some packets from the site.

How can I set up firehol to let youtube traffic pass through correctly? Or what must I do to let firehol know that youtube traffic is okay?

Okay, so realizing that most don't care, I'll post my solution:

It was actually the fault of dansguardian, which was not allowing youtube's images/stylesheet to pass through the filter. Adding s.ytimg.com to the exceptionsitelist did the trick.