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 Title 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 provide as many details as possible about the issue so that others properly understand the problem. For example, you could 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 and provide a link to the video in the issue. If the image or other supporting file is relatively small, you could also include attach the file to the issue itself. This will increase the chance that people will understand the problem or issue you are reporting.
4. After filling in all the details, press the submit button. After submitting the issue, you won't be able to modify the text of the issue, but you can always 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)