CKEditor > CKFinder Link works in FF, not working in Chrome

Hi,

Let's say I have a domain http://www.mycompany.com.
This site base directory is /www/site/html/
We have a .htaccess file on the base dir as follows :

RewriteRule ^(secure|contents|backup|image_upload|includes|login|javascript\.js)($|/) - [L]
RewriteRule ^(.*)$ index.php?sc=$1 [QSA,L]

When I opened the CKeditor on FF, and click the "Add Image" button, and "Browse Server" button, it takes me to the correct url, and displayed CKFinder browser, no problem. The URL is :
http://www.mycompany.com/secure/ckfinder/ckfinder.html?rlf=0&type=Images&CKEditor=page_contents&CKEditorFuncNum=1&langCode=en

But when I opened the CKeditor in Chrome, Add Image & Browse Server as above, it takes me to the base url, and into my 404 not found page. The URL is :
http://www.mycompany.com/?rlf=0&type=Images&CKEditor=page_contents&CKEditorFuncNum=1&langCode=en

All the others CKfinder/CKeditor settings are standard, mostly just layout settings.

CKFinder.setupCKEditor( null, 'ckfinder/' );

I've tried to disabled mod_rewrite on htaccess & httpd conf, to no avail, the browse server button still points to the base URL. As far as I know, CKeditor works fine on both FF & Chrome, so it points the fault to my .htaccess file. But then again, when I removed it, CKeditor still call the wrong CKfinder URL.
It even works on IE9 & Opera, no problem.

I'm at loss here. Any help would be very appreciated.

Cheers,
Richard