Hi, I have a problem with my nexus one: I connect to the PC with usb, when I receive the notification to activate the usb, I make it, but after two seconds, before I can see something on my PC, the Nexus (or the PC, i don't know) unmount the sd card. I am running a PC with Windows 7 x64. If I try on win XP all works perfect. I tried to to install the adb drivers, to connect with debug enabled without success. Some times, if I uninstall all the drivers using usbdeview, and I connect again using debug, I can see the SD card for a while. Any suggestion would be appreciated.