When I run apt-get update, I get this error, after having gotten an error because it couldn't find a file in /var/lib/apt/lists/partial, which I "touch"'d to make exist. W: GPG error: ftp://debian.lcs.mit.edu testing Release: Unknown error executing gpgv W: You may want to run apt-get update to correct these problems If one just deletes all the files in /var/lib/apt/lists, will apt automatically rebuild them? Thanks, anw