I think there are enough information outside regarding two important issue you should know about but RSS feed readers not having all possible feeds subscribed. So for my faithful friends two links where you can find the latest information.
Does SharePoint has a problem because of the IIS6 WebDAV security issue?
Answer is here: http://blogs.technet.com/srd/archive/2009/05/20/answers-to-the-iis-webdav-authentication-bypass-questions.aspx
If you think about SP2 for MOSS 2007 please read this blog post first or to prevent problems in the future read it also.