I have the above notebook and when I use receive E-Mail,or Download from the net i often get a ringing sound which starts and the only way to stopit is to mute the sound from the speakers or restart the computer.
The symptom is like a chain reaction that once triggered the audio card cannot be controlled.
I have a colleague who has exactly the same problem with the same notebook with a different fax/modem card.
I have a psion V34 modem/fax card.
Any ideas? Olivetti say they have never heard of this problem.