That's a possibility Tim. I loaded Chinese-TW with mixed results: First got an error page written in chinese. Clicked one of the links and it reloaded the fsp page for me. Clicked on the products page and it began to load, but it was never able to complete. Browser remained semi-functional. I closed FF down and tried again from scratch (cleared cache first). No dice, same FF-crashing-error is generated as previously.
What languages do you people have added?
I'm also thinking that it might be something to do with Flashblock.
On a side note, IE works fine.