Hi, I thought i''d give memcached a try. Installed it all, made the change in environment.rb and it all seems ok. I can telnet to memcached process and manually retrieve the data being cached. However, when I try to expire a fragment using a regex, eg: expire_fragment(%r{forums/recent/.*}) it throws an error: undefined method `delete_if'' for #<MemCache:0x2289968> I''m assuming i''m doing something stupid... Should the above work? Have I missed out a vital step? Oh well, back to the FileStore for now. :( ...j