While I'm viewing my activities, if I move my mouse over a "related to" name their contact info pops up, which is helpful, except when it pops up right over their name when I'm trying to click the link. That happens semi-regularly. And when it does happen, backing the mouse off and trying again gets me the same result.
I'm not sure what causes this because sometimes it works like a gem, info pop-up to the bottom left of their name. Other times it is a bear.