unable to open modem rfcomm0
I am using internet connection with GPRS via bluetooth with my Sony Ericsson Z550i mobile.
In starting after configuration, net had been connected successfully with kppp. But now it gives a message "unable to open modem".
I searched for modem file which is /dev/rfcomm0 in my case.
And on restaring bluetooth with command services "/etc/init.d/bluetooth restart" , it gives an error that "rfcomm0: module is already opened and being used". what may be problem for this?