Better solution: don't use the worst browser on the market.
When I said explorer, I meant anything that lets you browse the internet. The point isn't about microsoft internet explorer. I don't care if you use firefox, chrome, or your own internet neural interface. You need to clear out your temporary files and assign more space for it. Or you're going to suffer weird behaviors like what Coyote described.
Coyote, here is what you need to do. Your assigned temporary space is full. When this happens, you will experience symptoms like what you have been experiencing. You need to go into tools, empty out your temporary files, and give yourself more space for temporary memory.
Other symptoms of this happening is your flash videos not working correctly, your internet explorer taking forever to load anything, etc. Weird things happen when your temporary space is full. People have come to me over the years to ask about the weird behavior of their explorer. My advice of clearing out temporary files and assign more space works 99% of the time when weird things happen with internet explorer.
I use Firefox.
What it is doing now is strange. If I log out I can read the different forums and threads. As soon as I log in I can no longer read them.