Rust freeze and crashes on Receiving data or port to home.

Hi everyone!

I have a crash log. This happens when I have in my house to many (more 6) furnaces. This starts from last update (9 April 2015).

Hardware information:
MacBook Pro (Retina, Mid 2012), MacOS X 10.10.3 (Yosemite), 2,3 GHz Intel Core i7, 8 GB 1600 MHz DDR3, NVIDIA GeForce GT 650M 1024 MB.

Thanks for the any help!