Personally, I'll never buy another SCO product, and if I had any of their stock, I'd dump it. They're acting like Gates's goons over the Linux licensing issue.
The reason that SCO is using an extortion based business plan is that people are not buying their product. I haven't used it since the mid 80s, and I was extremely happy to dump it. I don't know anybody who uses it on a recent (last 5-8 years)installation. They are dead. The legal extortion is their last gasp.