WordFu app crashed unexpectedly during high-scoring game

Up until now, I've had none of the problems others seem to be describing here. I have a new iPhone and have been using WordFu with no trouble. I have just upgraded the phone OS to 3.0.1.

Until today, mid-game, I added a word and zap, the app just disappeared and I was at the standard iPhone user interface. All I did was shake the phone to add a word!

The state of the game was this:
- score over 15,000
- time remaining over 10 minutes
- hadn't yet flipped any dice during the game
- I think I had the letters D E N T R S L I A

Going back into the game, it took me to the main game menu -- usually when exiting the game it returns me to the game in progress, which is why I'm suggesting it crashed.

I don't know if I've ever got the time remaining to over 10 minutes before, and I definitely haven't got this high a score without flipping any dice -- but I have scored higher (over 35,000 points and over 1,000 words) without it crashing like this.