Not all browsers cache HTTP the predictable same way. Firefox behaves right IMO during my short development iterations, though not Safari or Opera in some odd cases. Hence I was searching for some way of telling the browsers explicitly not to cache anything, instead of manually emptying their cache every time I made some change to the Web application.
Trick is to use mod_headers, not mod_cache.
Btw I maintain an amazing collection of tips and tricks. I’ve added my little howto disable Apache2 caching to it. I wonder which Google will rank higher.