Using LEP out of the box (liferay-portal-jboss-tomcat-4.2-4.3.1.zip), the My Places menu ends up with "blank" entries. The menu is long enough, but no text or images are displayed for some of the entries. See the attached image.
To reproduce, login as email@example.com. Move the mouse over the Welcome Joe Bloggs menu and then over My Places. The communities are displayed correctly. Now move the mouse so the menus disappear, then repeat the sequence for My Places. The Guest public/private entries are now blank.
This does not appear to happen for Firefox pointing to the same installation.