Does SCO own SCO's code?

The latest twist in the SCO UNIX case is an allegation (reported in an article from eWeek and made by a source "close to SCO") that SCO used Linux code in its "Linux Kernel Personality" feature without complying with the GPL, the license under which the software was developed).

The evidence presented in the article seems tenuous, but is a harbinger of things to come as the Linux/SCO war heats up.