Iphone 3gs conversation display?

I'm using YM 2.2.8 on an iphone 3gs. I seem to be only seeing my side of the conversation. When a new message comes in I get the push notification and can see a summary of the message on the screen. When I go to the messenger app, the message is not visible anywhere. All I can see are the messages I've sent to my friend. What's going on? Anyone have any ideas?

Please try the basic iOS troubleshooting procedures here as a first step in resolving this issue:

Troubleshooting iOS apps

This usually resolves issues like the one that you are describing. If you continue to experience this problem, please let us know so that we can investigate further.