Ok, here's the deal.
When you enter the forums, your computer is passed a bit of information known as a Cookie.
This cookie contains the date and time that you last logged into the forums. So, when you are hitting the back button, the server reads your cookie as being newer than the page you are returning to, so you don't see any of the newer messages.
Instead of hitting the back button, try clicking on the Firing Line logo up at the top left, or using the Hop To box at the bottom.
Spark
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Kevin Jon Schlossberg
SysOp and Administrator for BladeForums.com
www.bladeforums.com