Hey everyone - I don't know if this is necessarily the best place to get advice with Lightroom, but hey, I can give it a shot. Recently I noticed that all of my thumbnail previews were rendering with different settings than the actual files...specifically, it seemed as though the saturation on all of the thumbnails was turned way up. This may not seem like a huge annoyance, but when you're trying to get an idea of how things are looking when the saturation is definitely out of whack, it can get difficult (especially especially when you're using the history). This isn't a problem with my monitor, since the image loads fine when you click on the full size. For more deets, I'm using Lightroom 2 on my Santa Rosa MBP and I shoot in RAW.