Hi, this host mode support is really great. I just successfully used my i2c-tiny-usb (http://www.harbaum.org/till/i2c_tiny_usb/) to my n800. And with the libusb already pre-installed it was a matter of seconds to get the demo app running on the n800 and having it access the i2c-interface chips and do some LED blinking. BUT: I have sporadic resets. Not only with my USB hardware but also with e.g. a prolific usb/rs232 converter. I don't even have to run my own drivers or so. A simple "lsusb" will at a 1/3 chance make the n800 reboot. Has anyone experienced this as well?