In default XenForo installation the timestamp in the "Last message" -column acts as a link to the latest post. This does not work with XC Multisite System enabled.
See demo: http://demo.xencentral.com/forums/main-forum.2/
Compare to non-multisite: http://forum.xencentral.com/forums/xc-multisite-system.16/
See demo: http://demo.xencentral.com/forums/main-forum.2/
Compare to non-multisite: http://forum.xencentral.com/forums/xc-multisite-system.16/