Avatar glitch?

[m_burlock]

I'm not sure this is the right place to post this but here goes. I watched the 3 hour version of Avatar yesterday. Twice when the Na'vi language was being spoken the forced(?) English subs didn't display properly. All that was displayed was a broken outline of each letter in each word. Is this a defect or a sign I need to update my firmware? By the way I bought this newly released 3-Disc BD in Canada and played it on a BD player bought in Canada. A BD player that's only 8 months old.