fckeditor module image upload problem

Hi all!
I have serius problems with fckeditor. I've tried everything but nothing seems to work.

My drupal installation is in the root.
I've installed and activate the module.
I modified fckconfig.js with FCKConfig.LinkBrowserURL = FCKConfig.BasePath + 'filemanager/browser/default/browser.html?Type=Image&Connector=/modules/fckeditor/ssip/connector.php'
and
FCKConfig.ImageBrowserURL = FCKConfig.BasePath + 'filemanager/browser/default/browser.html?Type=Image&Connector=/modules/fckeditor/ssip/connector.php' ;

I modified the properties.inc file as follow:

function _fck_connector_properties() {
$properties = array();

// The file system path separator (\) windows, (/) unix
$properties['path_separator'] = '/';

// The Context Path property represents a web application, which is run
// within a particular virtual host. If you specify a context path of an
// empty string (''), you are defining the default web application for
// this Host.
// $properties['context_path'] = ' ';
$properties['context_path'] = ' ';

// The default resource types list
$properties['resource_list'] = array('File', 'Image', 'Flash', 'Media');

// resource type paths (absolute path under the context_path)
// These directories must exists in the current file system and have
// read and write permissions
$properties['File'] = '/files';
$properties['Image'] = '/files/images';
$properties['Flash'] = '/files/flash';
$properties['Media'] = '/files/media';

return $properties;
}

folders /files and its subdirectories exists and have 777 permission.

I'm under linux server.

Those are the problems:
when I try to upload the image and go to "image properties->search on server" windows, the name of the folder is "/" and nothing is in it. I cannot select other folders. When I try to create a new folder nothing happens.
If I select an image to upload, it seems to upload it but nothing go on the server.
I made some experiments with $properties['context_path'] = ' '; and $properties['path_separator'] = '/';
Something happens only if I set $properties['path_separator'] = '\\'; browsing with my ftp program I found "something" like "\\files\\images\\testimage.jpg" in fckeditor/ssip/ folder. But This file seem to not exist because I cannot delete or transfer it.

Please give me some ideas....thanks!!!!