Picked up SL this morning on my way into the office. Installed it onto my Macbook 2,1. Install took a while, but went ok. I then plugged in my Sierra Wireless USB 881 3G dongle and fired up the Sierra Wireless Watcher program and tried to connect. No dice. It sees AT&T's signal, but when I try to connect it reports "Fatal Error" in the app's status window. Ideas? I know at one point I didn't need to use the Sierra Wireless software, as OSX supposedly supported this unit out of the box, but then it died at one point and I had to install the watcher to get it working again. This is a "Must Fix" for me or my Macbook is pretty useless to me!