It would be better to search the entire system, as it is entirely possible that the file was not created by a .deb, whether official or unofficial.
if you find something using that type of search, it's easy to determine whether it came from a package after the fact. -- libc6 update for Edgy fails due to sanity check https://launchpad.net/bugs/81125 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
