Product names in Cart not linking back to product when attributes have been added

[stevesh]

Edit: With regards to the upgrading, it's something that is beyond my capabilities and the site never gives any problems. It's even just been moved to a new server with the latest php version and just needed a minor change to 3 lines of code. If it ain't broke . . . !!

It is broke, and if you're hacked, which is entirely possible with the version you're using, you'll end up spending a lot more time and effort cleaning things up than you'll spend upgrading. Look at the upgrading FAQs - you'll most likely find that it probably isn't beyond your capabilities if you take your time and follow the steps described. You owe your customers a secure cart.

Looking at your site, you are using a URL rewriter, which may be causing the problem according to the first Similar Thread. Try turning it off and see if the issue continues.