I am having a strange issue with Gmail and Google Apps... have a look at this screenshot: http://cld.ly/f51ume
notice the missing images for the rounded corners? Well this is not such a problem but something similar to a cache issue is causing this as well as no background image, but MOST IMPORTANTLY chat and other "clickable" features aren't working. I've already cleared my cache multiple times and quit and re-started Firefox with no change. Everything is OK in other browsers.
Any other debug suggestions?