HOWTO: Submit core issues

Thanks, saw your message, however I could not find where to submit an issue for the core 'Drupal' Project There is no Project in the global navigation, under Downloads, the Tile of the page is Projects, but the core project is not there, nor the core themes.

I had difficulty with it too, in the beginning. Here are the instructions:

1. In the right menu, select 'Create Content'. Then Select 'Issue. You get the 'Submit issue' screen.
2. Fill the project field. Examples - If you are trying to submit usability issues for the garland theme, select 'Drupal' (the second item under the 'Drupal Project' category) and click 'Next'. If you are trying to submit general usability issues which are not module specific, select the 'User Experience' project under the 'Drupal Project' category. You get the second issue submission screen.
3. If you selected 'Drupal', you should now select the component to which the usability issue relates. Select 'Garland Theme' (it's in the bottom of the list) and try to fill as much details as possible about the issue, things which will help people visualize the problem. Add a link to a flickr picture of the usability issue, or record it as an AVI file with the free camstudio and upload it to a video sharing site, then give a link. This will highly improve the change of people understanding you. Or include the image as an attachment.
4. After filling all details, press the submit bottom. Take care - you won't be able to later modify the text - only add new comments.
5. Continue to update the issue to reflect new understanding you've got about the situation, and/or links to relevant information.

(adapted from http://drupal.org/node/118045)