I have a really odd problem. there's a link to a custom list on the Quick Launch which points to nowhere. the content which it is pointing to isn't listed on the "All Items" page, either. How could I get rid of this annoying sticky link. Thank you.
You can modify the navigation on this page:
In WSS3.0 this is under Site Actions > Site Settings > (Look and Feel) Quick Launch
Then, you can delete the link.