I'm aware of that.
I use Opera and because it's fast and easily configurable, I have it set never to fetch content from the cache and fetch images from the cache only if they are less than 5 hours old. In other words, when I hit a page, I get a fresh redraw of the content (text) every time. Thus no need to ever flush the cache and I don't get day old webpages like I often see on machines using IE (ie. 99% of the machines Chinese use).
Actually, I use Opera's cache for other purposes such as copying out and saving streamed mp3s and video content (eg Youtube). I wrote about how to do that elsewhere in another thread.
I really, REALLY wish we had a separate room here where we could discuss technology issues like computers, phones, cameras, etc. I've made the suggestion numerous times in the past to no avail. Lots of the good stuff is buried under hundreds of pages of the Happy/Sad/Both trilogy.