I've tried padding and changing the location and nothing seems to work.
Any thoughts on how to fix the nav links without bringing back the dividers?
ETA: I've just found that the first two links aren't working now either. Off to experiment more.
ETA 2: I fixed the links by moving them (I think they were overlapping the header area). The "P" thing seems to have been a combination of the font and Opera, and was fixed when I altered the font.