My hosting company recently migrated my 2 sites to a new server...on the old server i had some rewrite code which rewrote all mysite.com requests to www.mysite.com. All of my pages indexed in all of the SE's begin with www. Now on the new server the code had to be removed and I see already that google has started reindexing my top pages as non-www. Will the switch cause the SE's to deindex my site or count the pages as duplicates? Thanks!
Personally, I think G will see the pages as duplicates, but I don't see why that should matter. In my thinking, it will simply suppress one copy of the page from the index. I can't see why any penalty should follow.