So I moved my WordPress install to my domain root and the WordPress specific htaccess instructions have borked my WebDAV. Fortunately a little googling and I’ve got a solution.
Since running a multisite install, my htaccess rewrites a lot. Turning off the RewriteEngine inside he WebDAV direcetory solves this issue.
[code lang=shell]
<IfModule mod_rewrite.c>
RewriteEngine Off
</IfModule>
[/code]
Thanks Tim