When in the WP dashboard and looking at the current forum users online, Top posters, etc. even though their user name appears to be a link when I click on them nothing happens.

The link shown in FF when moused over says javascript:void(null) on another site with 4.5 it shows something like http://sitename/index.php?sf_ahah=profile&u=486

Before I jump into trying to debug I am wondering if anyone else is seeing this.