I have one similar problem. What happens is: I installed wordpress in my own computer, while I worked on a theme. When I was done, I exported wp data to an XML file, from wp’s control panel. I uploaded/imported the file to another server and ok, my information is all there. The only thing though is as I try to use permalinks, all my pages are displayed like this:
http://www.myblog.com/pagename-2
instead of:
http://www.myblog.com/pagename
I don’t know where this -NUMBER is coming from. Any ideas how to get rid of it?