I'm not sure if this is a Leopard bug or a TheUnarchiver bug, so if you can't do anything about it, please let me know and I'll stop being grumpy. :)

I decided to make TheUnarchiver take the place of StuffitExpander and Archive Utility, so I started to do a Get Info on a number of different formats to associate them with TheUnarchiver, and to click on "change all". This works fine with Zip. It shows a nice little cardboard box icon labeled "zip", which I assume you made.

It does not, however, work for Sit. (This is plain .sit, not .sitx.) Instead, when you change it to TheUnarchiver, it shows a nice little cardboard box icon labeled "sit". Well and good, right? Not! As soon as I hit "change all", the icon changes to a generic document. Very strange. Is this on your end or on mine? Is there anything that can be done about it? Thanks for your time.