Okay, I checked, and on IE 5.1 for the mac with the Carbon plug-in or whatever it is that ships with Mac OS X it works just fine.

should I send a bug to the opera people?  I'm using a beta browser, after all... but I don't think I have enough information on what it's failing to execute...

if I click on the "assign multiple categories" link for an entry, the window opens, but highlighting a topic and clicking the arrow to assign it does nothing, nothing at all, not even throw a javascript error, which Opera is So Fond of doing on mac OS X...

I already know it works with win2k pro using IE 5.5.  I will check shortly if it works on the mac with IE (I am in the middle of something here...)

Yeah, I just tried it with IE 5.1 on OS X 10.1.2 and it works just fine.  It might be a problem with Opera.