Black Lab Software decided to offer a special upgrade to those who use still use the Ubuntu 10.04 LTS on their computers, but their limited offer is for a professional desktop operating system, not a server OS. Above all that, upgrading to Black Lab Linux Professional Desktop 6.5 will cost users money, $19.99 (???18), plus $5.00 (???4.5) shipping and handling, per copy of USB flash drive, Live DVD or Live SD/MicroSD.