>I worked a project with a chinese engineer once. He told me that he daydreamed in Chinese. However, his math and logic considerations were english.
>
>What language do you daydream in?

I think I (day+1)*dreamt in the language I worked, while I was doing FPD2.6. Now I dream in images, having gone to visual stuff :).

Seriously, I only imagine I'm hearing or speaking in my dreams, and the words I hear/say make only general sense and sound of the supposed language, but often I catch myself inventing a word which I then can't understand :). And the word equally often doesn't belong to any particular language.

Our youngest daughter is just getting excited about understanding stuff in French (learning at school) and Japanese (as a hobby)... and she didn't speak a word of English when we came here.