I'm trying to get an Edimax EW-7811UN wifi dongle working with the 2012-08-16-wheezy-raspbian image. The straightforward way to do this seems to be to download and run MrEngman's script. In trying to do this, I've plugged in the dongle when prompted by the script, and the Pi immediately crashed and rebooted.
This happens each and every time I plug in the dongle after booting the Pi. When booting with the dongle plugged in, the Pi boots after throwing lots of udev warnings and hanging for a long time, and it's listed as should be in lsusb as a Realtek 8188CUS based device; but that way, the script will not work (incorrectly prompts that the device doesn't support scanning).
I'm running the Pi on an HTC phone charger with a 1A power output. This happens regardless of whether I also have a USB keyboard plugged in on the other USB port, or not (i.e. the dongle is the only USB device). If it's a power draw problem, I find that strange, since lots of people seem to be reporting that this is a very low power dongle and that they are running it with no need for a powered USB hub, even with lower output power sources...
This seems to be such a popular device with Pi users, but I'm having no luck with it. Any help is appreciated.