AppleActuator - Unknown entries in system.log - Can't find any solutions via Google

I bought a brand-new MacBook Pro Retina 13" some days ago. Everything seems to be perfect except one thing:

When I look into Console, I get massive "errors" in system.log:

May 4 19:04:46 MBPr kernel[0]: AppleActuatorDeviceUserClient::start Entered

May 4 19:04:46 MBPr kernel[0]: AppleActuatorDeviceUserClient::stop Entered

May 4 19:04:50 MBPr kernel[0]: AppleActuatorDeviceUserClient::start Entered

May 4 19:04:50 MBPr kernel[0]: AppleActuatorDeviceUserClient::stop Entered

May 4 19:04:50 MBPr kernel[0]: AppleActuatorDeviceUserClient::start Entered

May 4 19:04:50 MBPr kernel[0]: AppleActuatorDeviceUserClient::stop Entered

May 4 19:04:51 MBPr kernel[0]: AppleActuatorDeviceUserClient::start Entered

May 4 19:04:51 MBPr kernel[0]: AppleActuatorDeviceUserClient::stop Entered

May 4 19:04:51 MBPr kernel[0]: AppleActuatorDeviceUserClient::start Entered

May 4 19:04:51 MBPr kernel[0]: AppleActuatorDeviceUserClient::stop Entered

May 4 19:04:51 MBPr kernel[0]: AppleActuatorDeviceUserClient::start Entered

May 4 19:04:51 MBPr kernel[0]: AppleActuatorDeviceUserClient::stop Entered

May 4 19:04:52 MBPr kernel[0]: AppleActuatorDeviceUserClient::start Entered

May 4 19:04:52 MBPr kernel[0]: AppleActuatorDeviceUserClient::stop Entered

...

As you can see something starts and stops all the time when my Mac is up running (it never ends).

Can't find anything about this on the web. Absolutely nothing.

I really would like to know, what's happening there and how I can get rid of it!

Thank you!

Tom