I can only speak from (admittedly) brief personal experience so this may not be universally true. I have be a Mint user since early January of this year and I've used a Zydas 1211 exclusively. It worked on first installation and it has never given me any problems (the one possible problem was traced to a corrupted Mint 6 64 bit live CD). I even recommended it to a friend who was having problems with his Linksys WUSB 100 in Mint 64 bit. He got one and has not had any trouble since.
I've used the Zydas on three computers with 32 and 64 bit Mint with no difficulties. Never had to load a driver or do any configuration - true plug and play.
I should add that as far as I can determine the Zydas 1211 uses a n Atheros 5007ug chipset. I have read of problems with the Atheros 5007eg but have had none with the 5007ug.
Registered Linux User 483387