size does matter...........
About this picture size issue...
Perhaps (unless it's already discussed somewhere else) you could post the process for uploading pictures and what would be the correct size to start with. I'm not sure what programs other people are using, but photshop can resize an image very easily to any size, either pixel or measurement.
For people uploading pics- Make sure you upload the picture sized to what you want it to appear "after" someone clicks to enlarge it. The program (correct me if I'm wrong) will downsize it to a thumbnail automatically.
Mike