The bug tracker can be found at http://bugs.contribs.org.
Important: If you have you have discovered a bug or a suspected bug, please submit the issue to the bug tracker and not to the forums. Discussions about the bug should be within the bug tracker. Once you have submitted the bug, you can reference it in the forum as information to others please ensure a link to the bug tracker is provided.
The bugtracker is for reporting issues with SME Server and is used by the developers to track problems and new feature request needed for development of SME Server. Here you should report all problems you experience with SME Server installation. All problems or issues you experience with stock SME Server, SME Server contribs or with other products like the wiki and forums should be reported in the bugtracker and not in the forums.