connecting to wifi internet using TP-Link (TL-WN723N) usb adapter with Ubuntu 12.10
Download RTL8188CUS for Linux from Realtek.com
Extract the downloaded archive by right clicking, then selecting Extract Here.
Blacklist the original mudule:
echo 'blacklist rtl8192cu' | sudo tee -a /etc/modprobe.d/blacklist.conf
... then reboot.
Build the new module:
cd RTL8188C_8192C_USB_linux_v3.4.4_4749.20121105
sudo bash ./install.sh
It will take a minute to complete, and should start working right away.
PS: Keep the downloaded files, because you'll need to redo the last step after every kernel update.