I assume that you mean that you had the issue with Live Mesh beta, and now that you have removed that and installed Windows Live Mesh 2011, the issue persists.
Since you are now referring to Windows Live Mesh, not Live Mesh -
www.mesh.com, you should post to the forum for the new version.
For discussion of the new Windows Live Mesh (formerly Sync), (as well as the released Live Sync version) go here:
http://windowslivehelp.com/forums.aspx?productid=24
When you post there, answer these questions, too.
What firewall? What security software?
-steve
~ Microsoft MVP Windows Live ~ Windows Live OneCare| Live Mesh|MS Security Essentials Forums Moderator ~