Hi, I've got CentOS 5.3 installed as a Xen client installed. I've recently been trying to install TrueCrypt on the VM, but am having miserable troubles with the Fuse kernel module. To date, I've installed the following packages: yum install truecrypt yum install fuse However, to launch the fuse module, I need the dkms_autoinstaller running. However, when I try to start the dkms_autoinstaller service I get the following error messages: Jun 28 23:31:57 charliebrown dkms_autoinstaller: fuse (2.7.4-1.nodist.rf): Installing module on kernel 2.6.18-128.2.1.el5xen. Jun 28 23:31:57 charliebrown dkms_autoinstaller: Kernel headers for 2.6.18-128.2.1.el5xen are not installed. Cannot install this module. Jun 28 23:31:57 charliebrown dkms_autoinstaller: Try installing linux-headers-2.6.18-128.2.1.el5xen or equivalent. Indeed, the kernel modules available in yum are for 2.6.18-194.3.1.el5. I fished around, and found a kernel-headers package for 2.6.18-128.2.1.el5 (http://137.138.246.63/cern/slc5X/x86_64/yum/updates/repoview/kernel-headers.html). I downloaded the RPM, and downgraded my kernel-headers package. So I now have the kernel-headers package for 2.6.18-128.2.1.el5 installed. However, when I try to start the dkms_autoinstaller, I still get the same error message indicating that the Kernel headers for 2.6.18-128.2.1.el5xen are not installed. Where can I find this package? They aren't on the Citrix repos. From the few threads I've read, ppl are suggested to download a DDK VM to build new modules, etc, but that still won't help me, as I need the headers on the actual machine to run the dkms_autoinstaller service. I'm currently stuck / lost. Any help / suggestions would be greatly appreciated! Thanks, Eric