Mozilla 1.7 Cache fails to recognize new page

I'm a web designer.  I publish a new version of a web page and Mozilla 
still uses the cached version even though I have selected "Compare the 
page in the cache to the page on the network: Every Time I view the page".

IE recognizes a change if I only republish the FLASH element on the 
page.  Mozilla eventually does but I can't figure out what the trigger 
is.  Not very user friendly when I'm making frequent updates.

Has anyone else encountered this problem?  Is there a fix?