Odd PM?

[mad machs]

Just had the usual heads up via email that I've got a pm,

from Australian Ford Forums Forums <admin@fordforums.com.au> to xxxxxxxxxxxx@virgin.net date 1 March 2010 01:56 subject New Private Message at Australian Ford Forums hide details 01:56 (15 hours ago) mad machs, You have received a new private message at Australian Ford Forums from LTShane. Please click here to log in and read it: http://www.fordforums.com.au/private.php Thanks, Australian Ford Forums team

logged on the site to check it, & although I'm showing 1 unread message, there's nothing there to read, only my last pm which was way back in 2007.
But I'm still showing 1 unread message.