I experience more caching problems than I ever done before.
It looks like browsers seem to think nocaching is a security problem as many needs you to go deep into your preferences to delete the cache.
It should not be aproblem today with the speed of the internet we have now.
I just got this in Chrome after updating to 1.20
Even if Firefox and Safari had no problem. Safari has most problem offline but it may also reject finding new xml files which are loded as <include url="xml" />
I have been looking for solutions but they seems to be complicated if they should work.
The best would be a simple Meta tag