I'm using Entourage 2008 on my MP and I've noticed something strange. I get an email update from our hosted antispam service. It has embedded images with charts showing daily the spam rate, message rate, etc. Each day these messages come with the same subject line and all the images have the same file name. If I go back and look at previous messages, the body of the message shows the correct date, but the images are always the most recent copy. So if I go back 2 months, the message says September, but the graphs show November. Is there a way to clear the cache and prevent this sort of problem in the future?

Thanks