How do I unfollow an issue on drupal.org?
To unsubscribe to the issues for a project, for example the "Drupal.org web masters" project, you need to:


visit the issue page for the project (http://drupal.org/project/issues/webmasters)
click on the "Subscribe" link


In the next page, select "None," and click on "Subscribe."




Unable to unsubscribe to drupal.org issues is an old issue that has been opened in 2006, and it has been marked as fixed. I can confirm that unsubscribing from an issue queue works, as I have done it many times in the last years.