Firefox glitch? What's up with this?

I wonder if this is at all related to the"we encountered a captcha" error message I keep getting. I’ve no idea what a captcha is (sounds like a subgenre of rap) but I know it has something to do with a new gmail feature.

“captcha” is what Boston detectives do to criminals.

A captcha is the small image that you have to decipher and type in the box to prove you’re not a spam bot.