Posted this on amigans and hyperion forum without much response, so I guess I will try here also... I am trying to fix the network driver for Napalm. Problem is, that it locks up randomly sometimes, but always on the call to OpenDevice. I have described the issue here: http://www.amigans.net/modules/xforum/viewtopic.php?topic_id=5021&forum=25 Strange thing is, that it does not happen, when I run that exact same code in a small example app. Also of course there is no way to tell, it this is a 68k vs ppc issue or what.