I am using xgnokii (got using sudo apt-get install xgnokii) on
Ubuntu9.10 Linux and E220 (Huawei3G card).
I see that xgnokii is using multiple AT commands and getting responses.
When I click on "sms" on xgnokii
I start to see "Input/Output" errors and then onwards the errors stop
i.e every second or so it prints the error.