FLASH component not showing - blank white region insted

from time to time I get feedback from my web portal customers that they cannot see Flash component on the page 开发者_如何学C- instead there's a blank white region.

When it happens I instruct them to clear browser cache, and it solves the issue. Is there any way to handle this differently, using HTTP headers etc. ?

Thanks,Pawel

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If the real reason for this happening is the cache problem, then you should add to the swf you calling in HTML:

content.swf?154964879684654 -> which is some random number ( Seconds since the Unix Epoch or sesionID )

then it will be forced to load the swf as new one.