http://askubuntu.com – I am very disappointed with Ubuntu 12.04 LTS. I have tried it on two Desktops, both Pentium D 3.0ghz, one 2GB Ram, other 1.5GB Ram. In both cases 12.04 LTS was Slow, Unresponsive, and Totally Unable to Multi task. Simple tasks like Moving a File from a USB Pen take 100% of resources. (HowTos)