I've got the horrible task of moving a site from one hosting server to another and had no end of problems for DNS issues to temporary domain issues and FTP issues.
However I've managed to install a new database and import the backup of the old wordpress site and all is looking fine - I've got everything hidden behind a holding page (script in the wp-blog-header.php file allows access only to logged in users) and testing things out.
First issue I came across was the WYSIWYG editor was missing all the buttons for styling etc - so I re-uploaded all the wp files again and that solved the matter.
Second issue is that when writing a post and uploading an image, the image uploads but doesn't appear - there is no thumbnail appearing afte crunching and if I click to insert image into post I just get a blank box with a broken file link icon in it. I checked to the uploads folder and the image has uploaded and crumched just fine - so don't understand why it's not appearing in the blog post.
Any ideas of how to resolve this?