[jQuery] OT: any idea how to know what firefox is currently loading ?

[jQuery] OT: any idea how to know what firefox is currently loading ?

hi mates,
in one of my application interfaces, the page is fully rendered but the browser loading icon (top-right of firefox ) keeps on turning and the status bar also says so. I'm working on my local test server (localhost) and checked both the source code and generated source code: all loaded css and javascript file urls are correct.
Any idea if there is a plugin that allows to view in detail what firefox is trying to load ?
PS: i use an instance of FCKEditor.  could it be it?
thanks!!
Alexandre