I had a trawl around but couldn't find this issue.
If you set pagination to on ( I have it set to 5 products per page to force this issue), I am finding that on the first page of products in a chosen category actually shows the "previous" arrow where you would expect it to be showing the "next" arrow - strange.
Also can I control where the arrow actually appears on the page because the placement seems to be a bit random from category to category.
I am using Gridmarket 1.2 theme, Market press version 2.11
I have attached a screenshot, just look for the red arrow and the page can be seen here , just click on the "previous" arrow and the following page will have a "next" arrow on it, this is happening throughout the site though