For those of you who are in a shared hosting environment and cannot uninstall WebDAV, you can explicitly remove it from your site by adding the following remove tags into the web.config file of your site.

<configuration>
  <system.webServer>
    <modules>
      ...
      <remove name="WebDAVModule" />
      ...
    </modules>
    <handlers>
      ...
      <remove name="WebDAV" />
      ...
    </handlers>
  </system.webServer>
</configuration>