[Zope] folders show with firefox but not IE7

Anyone experiencing weird behavior with IE 7? I was creating folders into a folder that had exiting folders and the new folders wouldn't show up (old ones did show)until I did a paste of a different folder. Then all the folders showed up. I removed the user folder and a catalog from that folder and still saw the same problem. Then I switched to firefox and everything was back to normal. All the folders appeared upon creation. Any thoughts? Tim IE7 firefox 1.5 zope 2.9