The server speed could be your network running slow at a specific time. Just because your page loads fast now doesn't mean it was loading fast all day. My last host kinda sucked that way, it would be superfast in the morning hours but slow at other hours. So, I wouldn't necessarily get upset about a slow server rejection. Now that I switched hosts I never get that turndown.
Also:
http://www.realitypornindex.com/t/05/06/rich/0198/
The thumbs on that gallery are really blurry. You should use the sharpen filter in photoshop to make them look better.