agostini@portatile_andrew:~$ kppp
kbuildsycoca running...
Opener: received SetSecret
Opener: received SetSecret
Opener: received OpenLock

Opener: received OpenDevice
Opener: received ExecPPPDaemon
In parent: pppd pid 1244
Couldn't find interface ppp0: No such device
Kernel supports ppp alright.
Couldn't find interface ppp0: No such device
Couldn't find interface ppp0: No such device
It was pppd that died
pppd exited with return value 19
Sending 1224 a SIGUSR1
Opener: received RemoveSecret
Opener: received RemoveSecret
Opener: received OpenResolv
Opener: received OpenResolv
error opening resolv.conf!
Opener: received RemoveLock
Opener: received PPPDExitStatus

ho prvoto a cercare anche come da messaggio:

Il demone pppd ha interrotto la connessione in modo inaspettato!
Valore ritornato: 19
Consulta la pagina del manuale di pppd (man pppd) per verificare il significato del codice d'errore ritornato oppure leggi le FAQ di kppp a http://devel-home.kde.org/~kppp/index.html
ma non trovo sto cacchio di errore 19