Chrome returns "This page isn't working" for a few seconds

Hi,
I am running into odd behaviours using Chrome: I am working on a simple form, and as soon as I load the form helper in my controller (otherwise empty) Chrome displays a message saying the page is not loading because localhost did not serve any data.
It does that for a second or two then the page loads.
This happens more and more, and if I add some methods in my controller the page does not show at all. In the Chrome developer tools, I see a status "canceled".
I am not sure how to solve this, is it a memory issue?