Re: Menu arrow doesn't show in IE6
All of that is controlled from the css files if you want to look into this issue.
style.css is the main file in the skin but things specific for IE6 can be specified in the IESpecific.css and things for IE 7 can specified in the IE7Specific.css
Maybe something is already in one of those IE specific files that is making it not show the image.
I don't have time to fool with that myself for a little while.