OK, I'm getting super-tired of this.
EVERY TIME, without fail, when I reboot my router, for an indeterminate period of time, I can't connect to OpenWeb -- my router reports PAP Authentication error.
Now, I'm a Linux boy -- I don't like to reboot. The last reboot was done at the behest of an OpenWeb SMS support response where I was informed that there had been some "extensive changes on my account" because I had SMS'd for support on exactly this problem, and apparently said changes required my router to be rebooted.
As much as I have a sour taste in my mouth from Afrihost, I never had this problem there -- suggesting that the problem is not with my router, but rather with whatever is doing the PAP auth at OpenWeb (I'm assuming).
Please sort this out. It's well annoying.