Megaupload operators are facing legal action and their bank accounts have been frozen.
This means that no one is there to pay for the servers that stored millions of files uploaded by the users of the service.
Online sources suggest that the payments are already due and the web hosting companies have no option but to start deleting the servers rented out to the server for redeployment.
This means that users with legal files hosted on Megaupload might lose them forever.
The data on the servers is critical for both the US government and the Megaupload operators to prove the legality/illegality of the service.