Yes it is and it's also becoming an all to common phrase out of you as of late. While it's embarrassing it's also a bug, right?
It's nice that team Mozilla makes light of the situation but the more I see this message the more frustrated I get because of its overly polite, yet humble approach.
I can't help but wonder, "Why didn't you use this nice, friendly error message for problems that might occur much less often”? That way, when your browser REALLY fucks up, you wouldn't feel so bad about it!
But now that it's showing up as often as once or twice a day, I'd prefer to see a more serious or common message, such as "an error occurred, we're working on it".
Of course life could be worse and I'm not bearing a grudge, it's just an opinion.
Browsing the web? Get a life: