Ubuntu 16.04 repository error
I think that there is an error in the directory structure for the Ubuntu 16.04 deb repository. Following the install instructions at  results in a repo line of . This matches the directory structure for the other ubuntu repositories (e.g. 14.04). However the actual directory appears to be  (notice the duplicated ubuntu16.04). Prior to updating my sources.list file I received errors about being unable to find packages or headers (sorry I lost the exact error message). After modifying sources.list so that it contains  I was able to install ice 3.6.2 without problems.
p.s. Thanks for hosting the repos its makes staying up to date more convenient!
 deb http://zeroc.com/download/apt/ubuntu16.04 stable main
 deb http://zeroc.com/download/apt/ubuntu16.04/ubuntu16.04 stable main
Thanks for reporting the issue, we have fixed the servers, but sync could take some time.
It works for me now. Thanks for the quick fix.0