Built in messaging client

[blazinazn]

I'm currently using the built in messaging client for AIM only. The only gripe I have with it is, it doesn't always notify me that I have a message. Anyone else use the client and experience some of these issues:

1) If I have a conversation is open and I hit the power button to turn the screen off, I won't get a notification/sound to notify me

2) If I let the screen go off by itself and I still have the conversation open, sometimes it will notify me by sound and wake the screen up

3) Sometimes I'll get just the sound notification when I have the convo open.

It seems completely random when it will and won't notify me. Anyone know if there is an updated version of the client available? I'm happy with the functionality of the client, just not how I'm notified. Anyone else seeing something similar?

EDIT: Just the other night I had my phone on the today screen with TF3D on. I didn't get pop up window or sound to let me know that someone im'ed me. I hate having to constantly checking my phone to see if someone im'ed me =/