Been playing my latest character for a little over a hunded hours and have started noticing a couple of small, incidental bugs. (Xbox 360 here).

However, during that time, long, long ago in my save, I acquired the first two words of 'Yul Toor Shul', the Fire Breath shout from Word Walls in Sunderstone Gorge, etc. etc. Now when I go to speak to Parthurnax for the first time, once I have to learn the word of power for 'Fire Breath' from the Word Wall he burns it into, the word doesn't show up and I can't acquire the third and final word for Fire Breath.

I've tried saving and re-loading, spending various amounts of souls on Fire Breath before speaking to Parthurnax, restarting the quest and losing an hour or two of progress, etc. etc. Nothing seems to allow me to acquire the Fire Breath shout's third stage from Parthurnax and whether or not my current Fire Breath shout works on him seems to be decided completely randomly. Sometimes it will freeze, othertimes he will simply stop dead after taking damage, rear up and stare at me.

Anyone know a fix or way to prevent this? Was planning on taking this character through Dawnguard after completing the Main Quest.