Same issue
It's the same story with me, and it's as simple as that listed above. The Apple USB modem, straight from the package, worked and was easily configured on my Macbook (1.83Ghz Intel Duo, 2Gb RAM, OS X 10.4.7 fully updated.)
When I went to connect to my ISP, the unit displayed the following issues -
1. Line would drop erratically and repeatedly. The time between line drops varied from 30 seconds to a maximum of about 15 minutes. The vast majority of drops occured within 3 to 5 minutes.
2. The reported connection speed varied widely from a low of 9600 to a high of 52000. There was no consistancy in the speed, although it tended to rise the more times I connected.
3. When testing the same line with an Acer 1691WLMi running WinXP and an internal modem, the connection was stable at a reported 46000Kbps and the line did not drop at all. The same was true of the same laptop with an external US Robotics 56K USB Faxmodem.
The ISP was the same in all instances and is the main national provider. Although I can't stand them, I can confirm that their service works adequately, which is more than I can say for the Apple USB modem. I am going to test the unit in the office later today on our dedicated and well tested modem lines to see if there is any difference in the unit's behaviour and will report same.
From a brief scan of Google this morning, and the reactions on Apple's own customer feedback pages, it does appear that this unit is flawed. If anyone has any ideas or suggestions on tests to confirm this, I'd be grateful and willing to try them.
--- Raukan.