The current driver could let my Speedtouch USB modem work with Jaguar (10.2), but when upgrading to Panther, the modem is not recognized. Nowhere on the web you can find information (only grudging users, complaining their home connection to the web is down, just like mine).

So if you will be using Panther, dump your Speedtouch USB modem. (If you keep on using Jaguar, dump it too, because it makes your system vulnerable to crashes, system freezes during sleep,...)