I had some problems for two days getting the dns right (I made it oscillate between its old host and my host) and files over (the site had php errors from a change of hosts).
The site is fine now, but the rankings... It seems when I switched the dns, now the site is no where to be found in the search results for the keyword. What's going on here?
One theory I had is Google removes sites who's servers are down from their rankings (and hopefully puts em back when they show reliability again.)