All day today...go to buy an auction item and it'll throw you to the Black licorice page. Then when I get back to the auction page, the item will still be shown so I try to buy it again and it'll give me the "oops Item cannot be found" message and then disappear from the auction page.
When you check the person's profile (who you were trying to buy from) it'll show you as having succeeded in buying the item...yet no currants have been deducted.
Myself as well as one other person that I know of have been having this happen to us.