Are you surprised by this Mitts?
Actually, yes. The article is to focus around their product for Notes. They seemed more open to multiple platforms or service. Additionally, their Antigen product is supposed to come with 4 default AV engines. Does this mean that MS will be buying out those companies as well? Does the contract become null/void if MS buys them out? A colleague of mine sent me the following:

Sybari Software is very excited to announce Microsoft's intent to purchase Sybari. This news crossed the news wires at 9:00 AM EST today, Tuesday, February 8, 2005 and shows that our companies share a strong commitment to secure messaging and collaboration. This relationship gives us a solid foundation on which to expand our current goals for increased antivirus and antispam protection within the enterprise.

As a valued Sybari customer, we look forward to continuing to provide you with superior customer service and support as we move forward. If you have any questions in the coming weeks, feel free to contact your Sybari representative. You can also review the following whitepaper for further information: http://go.microsoft.com/fwlink/?LinkId=42094