On Fri, Mar 06, 2009 at 10:46:15AM +0000, "B. Liu" <bl246@hermes.cam.ac.uk> was heard to say: > I download the aptitude_0.4.11.11-1~lenny1_amd64.deb package, using dpkg to install, it hangs as well. My machines is dell poweredge 1950 64-bit Quad core. What's the output if you run "strace dpkg --install (deb file)"? Note that you'll have to install strace if it isn't already installed. Also, what do you get from "uname -a"? Daniel