Computer saying "done" but not moving pages??

[ladette]

I've had a recurring problem whilst using MN over the last few days. I click on a thread or topic and it says "done" but not moving to the page. Not sure if it's a site problem or a general problem, hence posting under the more general geeky stuff rather than site stuff. Obviously, as I'm able to post this, sometimes it works, sometimes it doesn't. Any one any ideas?

bump... driving me nuts. Can get into some MN pages but computer not playing on others.

Pressing F5 or refresh sometimes helps when i get this

Thanks dustystar, tried it but it didn't seem to work. Am on my laptop now and don't have the problem so more likely something with our computer rather than MN? Would welcome any other ideas.