I deeply regret that I must reluctantly add this device to my short list of only two devices that I know of no way to get working. The only suggestions I have left are to email Realtek and ask them about it:
$ modinfo rtl8192cu
filename: /lib/modules/3.5.0-25-generic/updates/cw-3.6/rtl8192cu.ko
firmware: rtlwifi/rtl8192cufw.bin
description: Realtek 8192C/8188C 802.11n USB wireless
license: GPL
author: Larry Finger <Larry.Finger@lwfinger.net>
author: Ziv Huang <ziv_huang@realtek.com>
author: Georgia <georgia@realtek.com>
And, finally, regrettably, return it and get a different device. I'm sorry I couldn't be of further assistance.