Just recently I have experienced a problem when I try to use the compare tool to compare two different products in Safari. For example, let's say I am on a camera manufacturer's web site and I want to compare two different digital cameras. After I select the two items and click on "compare now" the screen just grays out. When I try the same thing using Firefox, all is well. Running OS X 10.6.8 on a iMac 2.93 GHz Intel Core 2 Duo. Safari version is 5.1.9.