Please give us the output of lsusb for your device. I make a guess that it works with the annoying realtek 8192cu driver. You could check if the module is loaded with # lsmod | grep 8192cu If it is, maybe this post will enlight you http://www.raspberrypi.org/phpBB3/viewtopic.php?f=26&t=44310&p=35391...

To precise the problem with new experience reports: I connected my pi succesfully with tethering my smartphone with usb0. Worked great but I had to ifdown/ifup the device twice in a while. This morning I connected the pi without wifi-dongle with cable on eth0. No connection via ssh despite recognize...

Same here. Using an Edimax WLAN nano usb-stick which works well under berryboot-2.0., i.e. sufficient for downloading two distributions and starting to work under recent raspian wheezy. While updating/upgrading via apt-get it suddenly stops working, but works again after reboot. When I changed the e...