Turning On Airplay Mirroring on iPad 2 crashes router Internet connection

Using the new Apple TV 2 firmware 4.4 in combination with iPad 2 (iOS 5).

Apple TV 2 connected to Linksys E4200 router via Ethernet cable. I can stream movies over the network (USB-HDD
connected to router with router built in UPnP AV server). Samsung Series 6000 Smart TV.

- AirPlay working great from iPad 2 to Apple TV and everything else iOS 5 is also no issue.

BUT

When I turn On Airplay mirroring on the iPad 2 I can see the blue bar on top of the screen

indicating mirroring is On but only after a few seconds the blue bar disappears and the Internet
connection is gone for all users on my network.

I have to go in the router settings and reboot router in order to establish Internet access again..

I've gone through this 5 or 6 times now and I can single out the mirroring for the router crash.

Mirroring has not worked once.

Weird! Anybody?