Comment 37 for bug 121487

I have the same problem. For those who don't want to recompile gnome-ppp this will do the trick: rename wvdial to wvdial.bin and put the following script in place of wvdial:

#!/bin/bash
wvdial.bin 2>&1 | sed -u "s/[^:]*:/-->/" 1>&2

At least it works for me.