I can't understand why it is so and if it can have impact on crawlers.... I am using Joomla 2.5 + sh404 for seo.... Everything was good....but now I was compelled to start caching my site.... And I see - cached version .....doesn't keep my sh404 metadata, but falls back to basic metadata..... So...fresh, live version have correct metadata, keywords, page name, etc......but cached - no..... I hope crawlers are indexing the fresh version? Anyways, big problesms with caching so far....