Has anyone else come across this. I have a number of high profile high Pr (PR5) pages that do not have a cache on Google. When I check on other datacenters - 7 of 13 dont have cache. This means that for the pages concerned, they obviously dont appear in the serps. Nasty! The confusing thing is that the pages of particular concern have been around for over a year. I can expect this sort of thing to happen to new pages when they are just appearing in the SERP's/Datacenters, but for old established highly ranked pages, it is rather interesting!