hmm that is pretty intresting, I never thought about it before but it does raise several intresting questions. Nice find I'd quite like to read somemore about this so If you have any more links be sure to post them up .
This was something I had a debate about before when our german teacher in school said she thinks in german, sparked off a huge debate much like this. Is kinda an interesting thought.
I was talking to Docbot about the same sort of thing not that long ago. I asked him if he thinked in swedish and if he was listening to english does he then translate that into swedish before replying but he said that He could just switch on and off what language he thinked in. Which is quite intresting as when he's talking to a Swedish person he thinks in Swedish, but when he talks to and English speaking person he thinks in English. quite remarkable I think.