Sort of. I just don't see the need for full 3G speed when 2G speed suffices for receiving IM (and SMS/IM through Google Voice). Not to mention 3G consumes more battery life than 2G even if they're both just connected to GChat and epage's The One Ring (google voice plugin).

I tried to configure it before so that the number of bytes required for a 3G connection was higher than the number of bytes needed to maintain the messengers online but the problem is after it switches to 2G it doesn't automatically re-connect to the internet, thus GChat and Google Voice are offline on the device. The way I dealt with that was to have the Search for Internet Connections prompt look for a connection every 10 minutes. But obviously if it's always searching for an internet connection (even if already connected to one) then would drain battery life too. Unless the search doesn't search for one if already connected.

The way I'm doing it now is just manually switching it to 2G when I don't need 3G speeds since there's no other method. I was hoping that there was some easy way to monitor when autodisconnect switches to 2G (perhaps d-bus) so the connect script could be ran to connect it to 2G Internet.