I use to remember there was A G-chat app. I but now I can't fine one?
Do you have all of your accounts thru the "accounts" option in phone settings?
I have 3 accounts that I can switch between with no issues...
**Be yourself - Everyone else is already taken**
Mine is the same way it is using my main Gmail account and not my secondary one. I have signed out and cleared the APP data and every time it does not even ask it just signs in with the main one.
I even went into the market and changed accounts to my secondary, and opened Gmail and made sure my secondary box was active. Still chooses my main account, now this isn't a problem for me cause I don't use the APP. Just illustrating that the OP indeed is not alone.