I wanted to alert you to an issue that I ran into with Unarchiver. I tried to download a wireless broadband configuration application (you can get a copy of it here: http://www.clear.com/support/download -- d/l the Mac version 1.03.1031.0).
The problem was that the installation of that application failed. I was on the phone with that company's tech team multiple times and still could not get it to install properly (see attached image).
Then I happened to download it via Safari (which automatically opens zip file with the standard Mac OS X archive utility). Amazingly the installation worked that time.
The problem was related to the fact that I was always unzipping the file using The Unarchiver. And for some reason, TU was corrupting the .app file in the zip.
I thought I would let you know and let you take a look at the zip file in question.
I love TU, but in this one case it really messed me up for days.