The Asterisk development team has released dahdi-linux 2.1.0.4 This release is available for immediate download from http://downloads.digium.com/pub/telephony/dahdi-linux. This release fixes a regression from dahdi-linux 2.1.0 in which it was possible for the kernel to panic when conferencing channels together. Please see http://bugs.digium.com/view.php?id=14183 for more information. The complete change log can be read at: http://downloads.digium.com/pub/telephony/dahdi-linux/releases/ChangeLog-2.1.0.4 Thanks for your continued support of Asterisk!