Er, that's the name of the mother board. ASUS has a fine reputation for reliability. My old mobo (another ASUS) is still good, and it's about 8 years old. (P3B-F, 550Mhz, Pentium III)
Ubuntu is a Linux release, set up sort of like Windows, but complete with an office suite. It's free if you download it and burn it to disk or are willing to wait weeks for a free copy through the mail. I think they send it out faster if you buy it.
The theoretical advantage is that the virus writers have not been able to come up with something to infect Linux. It is, however, hackable, so one of the BSDs is better for servers or anything connected full time to the net.
The blasted thing crashed this AM, and again when I booted up a half hour ago. Not good.