Which version are you running? I had alot of reports of this issue on Amazon. Its related to 3.1 and 2.3.4 so it totally hit me by surprise! I did release a fix for it and the latest version on the market should have it.
When did you download it? The fix went out almost a week ago now.
Is there any chance you can run a logcat while you're playing and try to catch the crash? If you're willing and need some help on how to do it send me a pm or reply here! I would really appreciate it - its a very intermittant problem that only affects some people and very hard to trace