Yes. I have found a solution though - double click on the thread you want to go to. You'll see the green bar at the bottom of the screen fill up reeeeaaaaaalllyyyy slowly. Double click on the thread title again and it will open it up straight away.
Virginmedia had massive switch problems from about lunchtime yesterday it affected some sites but not others (including their service status page which you couldn't access). They seem to be fixed now so that might have been the problem (MN was affected for me yesterday but is fine this evening).