Hmmm... this is interesting. It says:

"Unable to expand "bind-9.4.1-0.3mdv2007.1.src.cpio" - it is in an unsupported format."

However, the title at the top of the window says "Archive Utility". Do I have the .cpio extension improperly mapped to use Archive Utility rather than Better Zip? The icon in the finder associated with it is the document with the zipper and says "CPIO" but I've noticed that some other file types that used to look similar (such as tar.bz2) now use the Better Zip icon.

Does Better Zip change some preferences to handle certain archives? Is which archives it handles automatically configurable or automatic and perhaps it missed the cpio file type?