Hello, I have returned my 2010 MBP 13" to replace it with the 2011 MBP 13" i5 one. The 2011 model came with Mac OS X 10.6.6 preinstalled. Somehow, it won't detect the USB devices, that were detected and worked perfectly with the 2010 model. I have a Huawei E1750 3G modem and Emu 0404 USB audio interface, both non functioning. The devices are shown in the system profiler, but they are simply not working. I've just updated OS X to 10.6.7, but still no success with my USB devices. Anybody with similar problems and/or solution? Thanks.