Fragement in lens - worth worrying about?

[Minstadave]

Bought a new lens a few weeks back, it's a Panasonic Leica 25mm F1.4 if that helps.

It's got a bit of dust or something inside it:

http://imgur.com/iI3B2DB

Linked as the image is massive.

Can't see anything obvious on pics, is it normal or should I worry?

 

[Buddy]

It probably won't affect the image but had I bought this new I would just get a replacement.

 

[Andy90]

All lenses end up with some dust inside them over time. Normally doesn't cause any problems, however as that is a new lens it is simply unacceptable.

It looks possibly like a fragment of the non-reflective coatings they have inside these things.