From time to time (once or twice a week) Gtalk disconnects (network error) when I switch between wifi and 2G or 3G or from.

The only solution I know to reconnect Gtalk is rebooting the phone. I have been looking for some other solution, like disabling Gtalk account and re-enabling it, but it does not work.

Does anybody know if it would be possible to kill some process from terminal or any other workaround in order to restart a fresh Gtalk connection?

Thanks in advance.