An article in Linux Business Week's online edition is claiming to have seen an SCO press release about requiring a royalty payment of $96/CPU for all servers running non-SCO brands of Linux.
They apparently claim that the license is required due to UNIX patents acquired by the company from Novell who acquired them from AT&T.
There are further claims that IBM may have dissuaded them from following through on it.
_Ed. Note:_Call me paranoid, but this is exactly the kind of move that Microsoft would love. Add to that the rumor that SCO will be using one of the anti-trust lawyers who played against MicroSoft and it is an interesting situation.