Using the most recent version of Ubuntu Jaunty, there is a problem compiling the package located here: http://vouters.dyndns.org:8080/Intel/intel-536EP-537EP-2009_07_07.tar.bz2 # make 536 cd coredrv; make clean make[1]: Entering directory `/usr/src/intel-536-537/coredrv' rm -f *.ko .*.o.cmd *.mod.c .*.ko.cmd *.o *~ core Module.* modules.* rm -rf .tmp_versions make[1]: Leaving directory `/usr/src/intel-536-537/coredrv' rm -f *.o *.ko Module precompile check Current running kernel is: 2.6.28-14-generic /lib/modules... autoconf.h does not exist please install kernel source make: *** [check] Error 1 autoconf.h is not included in the latest headers of Ubuntu kernels. I do not know what is it used for, and I do not know why it is not included. My only concern is getting the driver compiled. Perhaps it is possible for the compilation process to gather the required information from another source? I have made a post regarding this issue on the Ubuntu forums. http://ubuntuforums.org/showthread.php?t=1239123 Currently, compiling for the latest Ubuntu Jaunty kernels is not possible via the latest 536EP source. Stephen Pinker of http://groups.google.com/group/ubuntu-modems