Strange Problem with incorrect categories in head

We just implemented the htm urls on our site but for some reason the headings on each category is pulling down the heading from the item above. It goes to the right place when clicked but the description in the URL is incorrect.

 

eg here

 

So the fist one which is Apple Laptop Memory / Apple Laptop RAM goes to

 

But the second one which is Apple Mac Desktop Memory says

 

Goes to the right place but has the wrong description in the URL.

 

It should be

 

Anybody got any ideas why this is happening..

 

UPDATE: If I change the "DisplaySubcategories" to "In a List, without images" instead of "In a List, with images" the correct URL appears in the corresponding category URL.

 

Thanks

 

Rob