Microsoft today announced that they have another SharePoint opps in the works. The fact that the blog post came from a Corporate Vice President suggests to me just how bad this opps is and also just how seriously they take it. The blog post here shows that if you apply Service Pack 2 to a full SharePoint 2007 server, or Search Server 2008 Express that it will stop working after 180 days. They are working on a bug and will have something out shortly.
THIS DOES NOT AFFECT SBS 2008 It does however affect Search Server 2008 Express which I know a few SBSers are playing with.