changed hosting and google is not seeing my sites any more
I had bought domains and hosting from godaddy, but the hosting was in asia pacific and the sites were loading very slowly in latin america, where they are supposed to be seen. I changed the hosting and now the sites are not showing any google cache date, although I submitted them again to google on the webmaster tools
Looks like you might of had some down time somewhere along with the change in hosts. If so it will just be temporary, just keep building some links to get the google bots back to your site, upload a sitemap...
you might also want to check your url structure. If something is changed then the old pages wouldn't show up anymore.