Description of problem: Truecrypt does not compile because of conflicting declarations of dm_create function in kernel headers. Here's the error message from compilation: In file included from /usr/local/src/truecrypt-4.2a/Linux/Kernel/Dm-target.c:18: /usr/src/kernels/2.6.18-1.2798.fc6-i686/drivers/md/dm.h:48: error: conflicting types for ‘dm_create’ include/linux/device-mapper.h:144: error: previous declaration of ‘dm_create’ was here Version-Release number of selected component (if applicable): kernel-devel-2.6.18-1.2798.fc6 How reproducible: Only tried this on one computer. Steps to Reproduce: 1. Try to compile the truecrypt sources (http://www.truecrypt.org/downloads/truecrypt-4.2a-source-code.tar.gz) 2. 3. Actual results: Should compile Expected results: Won't compile Additional info: