Dear Thomas, Can you take a look at src/sys/dev/ata/atapi-cam.c,v 1.42.2.3? With this revision of atapi-cam.c k3b application hangs on splash screen and I had to use power button only to restart the machine. This is observed with RELENG_6 and recent k3b port. Other people had similar problems. k3b starts fine with atapi-cam.c Revision 1.42.2.2. thanks, Ganbold