@MentalAbyss
For site GameKnack, when I click the smaller preview image link for a product to enable a closer view, instead of interpreting the source as usual and displaying more information about the item clicked, Firefox displays the plain text of the source in the browser window.
Also the preview images for the products appear to load more slowly than usual in Firefox.

Mozilla/5.0(Windows;U;Win98;en-US;rv:1.7)
Gecko/20040707 Firefox/0.9.2

Item descriptions appear when the smaller preview image links for products are clicked in the version of Internet Explorer I use occasionally, but a Download Manager attempts to download an .mp3 file in at least one case.
When using Internet Explorer, the preview images also appear to load more slowly than usual.