Hi all. I'm rather new to linux crypto, so any help with this problem would be appreciated. Here's what I did. a) Installed kernel 2.4.18, all necessary loopback patches, crypto patches, etc. b) Compiled the crypto modules right into the kernel c) Compiled new kernel, everything works fine. Startup lists installed ciphers, I can view them in /proc. d) Downloaded util-linux-2.11n source e) Patched with util-linux-2.11n.patch f) tried to compile mount, umount, losetup f) got an error about redefining dev_t g) found a script to fix dev_t in loop.h, ran that. f) Recompiled mount, umount, losetup - works now. g) Replaced existing /bin/ programs with the new ones. h) Created a new crypto FS as in the FAQ (mounted it to a loopback device, then mounted that in a folder.) Worked fine. I) Copied files to the mounted directory. No problems, can run ls and they show up. now here's the problem. umount /mycryptodir OR umount /dev/loop0 both lock the system hard. Total freeze, numlock doesn't even work. I have to cycle power to get the thing to reboot. Any ideas? Thanks! Jay Davis - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/