Upload Database Error

Hi guys,
I just installed wordpress 2.3 and imported a database from my old server. Everything works fine except when I try and browse my uploaded files in the Manage>Uploads page.

I get the following error:

Warning: filesize() [function.filesize]: Stat failed for /home/19021/domains/popmag.com.au/html/blog/wp-content/uploads/2007/11/wordpress2007-11-21xml (errno=2 – No such file or directory) in /home/19021/domains/popmag.com.au/html/blog/wp-admin/includes/upload.php on line 42

I can see the files I have uploaded since the database import, but none of the files from before the upgrade, it just has that error where the files should start being listed.