@Huijun - Ok, I think I have a fix for this issue. I'll release 1.7 here shortly.
But first, are you sure you added the following lines to the wp-config.php file?
define('WP_HOME', 'http://' . $_SERVER['HTTP_HOST']);
define('WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST']);
I just want to confirm because if WP_CONTENT_URL is not defined properly, it could also cause this problem.
Another cause is if you have specified an absolute url in Admin > Settings > Media : Uploading Files. Removing this and using the default value would also fix the problem (but won't be necessary in version 1.7 of my plugin.)
Regardless, I can intercept the URL and adjust it to root relative. If after verifying the
define statements above are in your wp-config and after upgrading to 1.7 you still have problems then let me know and I'll work with you further on this issue.
I should have 1.7 released in a half hour or so.