At issue is whether there is a conflict of interest.

Megaupload recently hired high-profile attorney Andrew Schapiro to defend itself, yet because of his firm's participation in cases involving Google, YouTube, Disney, Fox and other movie, TV show and software companies, the government is crying foul, saying it plans to call as witnesses some of these companies in the Megaupload case, according to .

YouTube, for instance, is listed as a victim in the indictment against Megaupload. Schapiro led YouTube to a summary judgment in a copyright trial against Viacom, a battle that is ongoing since that judgment was recently reversed.

And Google, which also has been represented by Schapiro's firm, Quinn Emanuel Urquhart & Sullivan, LLP, supposedly withdrew its AdSense service from Megaupload because of copyright concerns.

"It is unclear how Quinn Emanuel intends to zealously represent defendants Megaupload Limited and Kim Dotcom while also protecting confidential attorney-client information gained in the course of representing other clients, ... particularly where those clients interests are directly opposed to those of the defendants," the government wrote.