Hi. I'm on OS X Yosemite, and I'm experiencing some issues with 3rd party browsers. While Safari works perfectly, Chrome and Firefox only work for a few minutes, after which they stop loading pages (they just stuck on "loading page"). If I quit the application, the main window closes but the application remains launched and stops responding. I have to force quit it for a few times before it actually closes itself. This happens with both Chrome and Firefox. I have already tried reinstalling them and reinstalling OS X, with no luck. Any ideas?