Cheryl Cole, round two?

Just like the Geordie singer who was ousted from the FOX talent show The X Factor because executives judged that viewers could not understand her, producers of NBC's America's Got Talent are concerned their latest high-profile recruit, supermodel Heidi Klum, is going to be a flop -- because her German accent is too thick!

"Heidi might as well be speaking German because the contestants are having trouble understanding what she is saying," a production insider told Breaking Celebrity News.

"It's quickly becoming a problem because producers are having to stop filming and ask Heidi to try and articulate what she is saying in a slower, more concise manner.

"Her critiques often fall flat leaving those auditioning with a look of bewilderment and confusion."

But one source says it's all a misunderstanding and that Heidi was simply having fun a one point, putting on an extra-thick accent.

Despite reports that Klum's judging costar, former Spice Girl Mel B was constantly being booed by the audience and struggling, our sources say that's not the case.