I confirm this bug on current Jaunty, with PPP connection not managed by network-manager (PCMCIA modem), but that's not the cause. System Monitor Applet seems to be rewriten a bit - "SLIP", "PLIP" and "Other" interfaces are gone, probably as obsolete.
I confirm this bug on current Jaunty, with PPP connection not managed by network-manager (PCMCIA modem), but that's not the cause. System Monitor Applet seems to be rewriten a bit - "SLIP", "PLIP" and "Other" interfaces are gone, probably as obsolete.