Glitchy Behaviour but Still Fun

My 3GS has been experiencing shaking graphics where the visuals are effectively doubled. This isnt happening on my 4S. Both my 3GS and 4S experience occasions where the Protozoa seems to give up and not follow and rules, just sitting and sleeping until it starves. They also often ignore higher level rules. This seems to be a recent phenomenon, perhaps since the last app update. Both my devices are running iOS 5.1.

This is still a good app. Just glitchy lately.

Stellarnight about Artificial Life, vv2.2.2