Looks fine! The warnings about the GPG error are Nokia's fault to not update the signing keys for their repositories. Nothing you could do about that, everyone gets this! You could get rid of the duplicate sources.list warning by removing one item for the extras repository in HAM. Tap on the upper menu bar, choose Repositories, erase one of the entries for the extras repo. This may take some time if the Manager decides it must update the repositories before and after the editing (Bad application design by Nokia!!!).