What I'm seeing (in IE) are the little "Waiting for" thingies flashing at the bottom of my screen. There have been more and more of them as Max has loaded up ads and stuff, such as Facebook, Google ads and other crap. And now my browser has to additionally wait for 2345. After that it usually says "Done, but with errors on page". And when it says "Done", whatever I've clicked on still doesn't open for several seconds, to the point where the blue IE bar at the top of my screen says "(Not responding)".

That's annoying in itself. If this is something Max did on purpose, I don't like it. Why slow down the user experience? If it's malicious, it's much worse and should be dealt with forthwith.