CNAMErecords and switching DNS at the domain registrar.
I have been using WordPress svn copy for my sites. The WXR upload failed on me. I thought that was write permission problem so I
chmod 777 .the
wp-contentdirectory to make it work. It failed again.
I also found that theme files are not writable so I did
chmod -R 777 .again making sure it changes access permissions recursively to all files and directories. I could now update theme files but importing of WXR file is still not possible.
Both svn and stable release 2.3.3 have been tried. I don't know what else could be done apart from using MySql dump, change url reference and MySql import. I have shouted for help at WP's forum but so far heard nothing.