Font problems in some progs
 

Don't know how it happens, but some weeks ago the font in Opera got messed up (in menu bar and right-click menu), and the same happened to MPlayer yesterday... tried to reinstall, but didn't help... anyone know what the problem is? (running Kubuntu 5.04)

Here are 2 pictures to show (this problem REALY irritates me :P, help would be appreciated):

http://img66.imageshack.us/my.php?image=font013nx.png
http://img117.imageshack.us/my.php?image=font023ot.png