I've run across my first compatibility problem with Leopard and LR. It started when I was trying to drag some images from the finder into my iWeb gallery which didn't work. I then found that trying to do anything in the finder to access the image, such as get info, or selecting it while using column view in the finder which should show the preview in the right column crashes the finder.
The problem seems to be related to lightroom and metadata on jpeg files created after being used in LR. The only fix I've found is to open the jpg in photoshop and then resave the image out with save for Web. I've been looking for a utility that strips all the metadata from the jpeg so I don't have to re-compress it, which would be better for the web anyway. (anyone know of one I would appreciate it).
It doesn't affect every jpeg, and so far I can't find a commonality for the ones affected.
Here is one thread about the issue...http://discussions.apple.com/thread.jspa?m...667546&tstart=0