As Juha, and no doubt many others, has noticed Trade Me is currently unavailable. The guys are working as I type to get things fixed. Hopefully it will be back up soon.
UPDATE (04-Jan): It’s back up. The site was down between 8:50pm last night and 6:10am this morning. All auctions that were due to end during that time have been extended by 24 hours. There is more information in the site announcement. As the announcement says we sincerely apologise to everybody affected.