Cycles's Node Interface Very Laggy

Hi, I’ve starting using nodes after a long time and I’ve noticed that the interface is very laggy when your try to zoom in or out of it. It basically freezes, is anyone else experiencing this? I’m using Blender version 2.70.

Thanks.

this happens to me, in my crappy computer, but only when i have the viewport in rendering mode. Is that your case?

Mine does this if I am in GPU mode.

I had 3 windows open in Blender, one was the node interface, the second was UV-unwrapping thingy, and the third was just solid viewpoint not rendered. I tried again with only one window and it still lags. This never happened with older versions I had. My laptop doesn’t support GPU. Just using my CPU.