I have the exact same issue. I am using the development base. The files are generated properly in the supercache, the problem is they are generated every time a page is requested and they are never served up, just constantly regenerated.
What information do you need to help me out here? It seems like the problem must lie in the rewrite rules in .htaccess, but as far as I can tell it looks good. How does the software make the decision as to whether or not to serve the cached copy?
