Comment 4 for bug 364191

ah - I see the culprit on the line-height - it is the css we use to truncate the book titles and user names, which can be quite lengthy -

.truncatedisplayname {
 width: 10em; /* constrain width try 20em */
    line-height:1em; /* to be adjusted */
    overflow: hidden; /* hide excess */
    position:relative; /* Fix IE missing overflow bug of r.p. span */
    background: #F9F8D0;
}

Removing the line-height fixes the problem - I may go ahead and do that on production and staging while we work out the other aspects of the UI.