Social music site Last.fm announced an investigation into a user password leak this morning. In light of a recent leak involving large sites such as LinkedIn (where 8 million passwords could have been compromised) and eHarmony, Last.fm is asking users to change their passwords immediately.

Last.fm users can switch their passwords by logging in and accessing the "Settings" page, or by reporting their password as lost. In the site's announcement, Last.fm re-emphasized these are the only means for password changes: "We will never e-mail you a direct link to update your settings or ask for your password."

Last.fm will update the status of the leak in the site's user forums or through Twitter when more information is available. Until then, the site offered the warning above and advice on choosing a secure password through Google. The amount of passwords potentially leaked has not been announced at this time.