3c589.device crashes OS4 when being shut down. You can get around this problem by bypassing the Internet Prefs and creating the interface using a text editor.
There's no PPC native version of 3c589.device included with OS4, but I'm the author of this driver, and I think I nearly have a working version. If you'd like to help me test the new driver, please mail me at caffer at cs.ucc.ie.
