I flashed one of the Ice Cream Sandwich builds yesterday and afterwards I found that Neongeo (v 1.149) won't start. As soon as I tap the icon to start it, it pops up a dialog box saying it has stopped. I tried clearing the cache and reinstalling, but the behavior persisted.
I went back to a non-ICS flash this morning (BlackIce v1.27b8) and NG works fine there.