Seems SCO upped the stakes by 300%

The amended suit also asserts that SCO holds copyrights to Unix, a point that could be key in future Linux and Unix litigation. Novell, which owned Unix intellectual property before selling it to SCO's predecessor, initially disputed SCO's ownership, but later relented.
a good story also starring Linus Torvalds ( he just joined OSDL )

ow and IBM's comment (16-06-2003) on the cancelation of the AIX license

thx to www.lwn.net