IMPORTANT NOTE: This page is deprecated, updated documentation can be found here

This driver is for the Realtek RTL8180 chipset.

ifconfig wlan0 down
rmmod r8180
wget http://ovh.dl.sourceforge.net/sourceforge/rtl8180-sa2400/rtl8180-0.21.tar.gz
wget http://patches.aircrack-ng.org/rtl8180-0.21v2.patch
tar -xvzf rtl8180-0.21.tar.gz
cd rtl8180-0.21
patch -Np1 -i ../rtl8180-0.21v2.patch
make && make install
depmod -a
modprobe r8180

If you own a RTL8185 chipset card, check this thread out.