Has anyone seen this?

["AdobeCF7User" <webforumsuser@xxxxxxxxxxxxxx>]

I have a website that uses a few flash forms on different pages.  It's on a CF8 
server and the clients are generally IE6.  Sometimes all works well, sometimes 
the flash form on a page doesn't show up.  

 Refreshing the browser, closing/re-opening the browser don't work.  Restarting 
CF doesn't work.  

 I put the same code on another CF8 server and access with IE7 and it works 
fine.

 Why the heck would a form show or not show intermittently when nothing has 
changed in the site code or server settings?

 Thanks in advance.