I mean, all links that are bold and when you hover over them they became normal. They are shaking and moving in all directions.. Since bold text takes more space, sometimes a topic title is wraped into two lines.. when you hover it, it skrinks to one line.. sometimes escaping your mouse "hand" like it's fearing the click
![Smiley :)](./images/smilies/smiley.gif)
It's better to apply another style, like having bold links in both states, just adding "a.hover {text-decoration: underline} for instance. Otherwise it affects the whole layout. Even tables are shrinking when you hover the different columns' headings.