Did adding the "stupid mode" line work?

I have no indication that dailup does not work in Ubuntu Edgy.

Note: dialup seldom works in windows unless you install the driver that came with the modem (in '03 I had to load the drivers for intel chipset modems - internal and external - before windows could use them, all linuxes to date have recognised the external one with no problem). Similarily, I found that RH9 autodetected and configured an internal ISA modem for me which windows 98se claimed did not exist.

If you look at the list of bundled modem drivers in windows, you'll see seperate drivers for modems with identical chipsets - requiring only one driver in linux.

Basically, windows uses stupid mode all the time

With Debian Etch, it depends how you set it up. also, different distribution have different setup systems. These systems will work to different effect with different devices - so devices that get autodetected and configured in one distro may give errors in another. This is also the sort of thing that can change between version in a distro - especially when one method is being depreciated in favour of a more promising one.

I suspect the GUI issues in modem setup are due to the emergence of the wvdialconf script. (and the prevalance of broadband use amongst developers.)