The Windows drivers are also problems (tested in Windows 2000), but you should download the latest driver from the manufacturer's website preferable because the supplied on a mini-CD, are older.
The reception quality and stability is very good, significantly better than the ASUS USB Stick with Rail Link chipset which I previously used and often lost the connection and was not usable under Linux.
With the Atheros chipset based on a TP-LINK card I finally me and go take no more problems at home with a variety of access points connecting.
To make a long story short 'works as expected - highly recommended.