This is, I think, just a suggestion for something which could be a useful future feature (well, it would be to me).  It's a nice effect to have some descriptive text on the page, with the thumbnails displayed too - so when you've read the text, you can click on the thumbnails and get the slides.  All very neat and intuitive.  However, if you have a transition fade effect, the text keeps showing through as the fade happens (with ordinary fade or cross-fade).  You can get around this by using the 'flash' fade effect, but not, as far as I can work out, with ordinary fade.  What would be really useful is if there were an option to have the slide background appear only when the first slide comes up, not when the display is loaded.  And if anyone else can think of some other ingenious way of achieving what I want to do, I'd be grateful for suggestions!