I got the same error yesterday, it was said to be because of CDN issues, but today I get new error:
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.mono-project.com wheezy Release: The following signatures were invalid: BADSIG A6A19B38D3D831EF Xamarin Public Jenkins (auto-signing) <rel...@xamarin.com> W: Failed to fetch http://download.mono-project.com/repo/debian/dists/wheezy/Release W: Some index files failed to download. They have been ignored, or old ones used instead. -- View this message in context: http://mono.1490590.n4.nabble.com/apt-get-update-checksum-error-tp4664104p4664110.html Sent from the Mono - Dev mailing list archive at Nabble.com. _______________________________________________ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list