I'm kicking myself right about now, I played around with slide timing for the best part of 10 minutes to find an ideal pause, in the end I increased it by a third to make sure the slightly-heavier-than-they-should-be images had chance to load before the slide advanced.

I was planning on spending another couple of days optimizing the home page and completing work the rest of the application UI, which was almost complete, but EXEC released their official redesign earlier today so I had to rush it out. Guess that's just the way it goes sometimes