It seems, there is a major problem with the Server CU.
The Cumulative Update packages affected are the Server Packages for SharePoint Foundation, SharePoint Server and Project Server 2010, specifically;
- SharePoint Server Package 2394320
- Project Server Package 2394322
The downloads for both of these packages have been removed from our servers. If you have already downloaded them you SHOULD NOT install them. They will be republished.
An update, which addresses the issue, has been released: http://blogs.technet.com/b/stefan_gossner/archive/2010/11/18/october-cu-for-sharepoint-2010-has-been-rereleased.aspx