I am getting a wierd error with verion 2009-02-14: it appears as though some characters in page names are getting encoded as special characters. These, in turn, are not represented to users correctly.
In the attached image, the expected text should be:
# imagemanipulation (projects:mapping) # gripe_list (docs:projects_kaleid..
It appears as though the pagename alone is getting munged, because the tooltips look ok. This screenshot was taken from FF 3.5 -- in IE 7, these things appear as boxes.