slash problem in file fckeditor.module

I spent almost a day to find out File Browser/Uploader problem.
Finally, I think it may the path error.

Before changing this, you can find something interesting in the html source of edit page:
SkinPath=/modules/fckeditor/lib/editor.....
src="/modules/fckeditor//lib/editor/fckeditor.htm....
You can see two slash added on /modules/fckeditor//lib...

However, when I entering admin page and config the path field, the SkinPath become wrong path
SkinPath=/modules/fckeditorlib/editor.....
src="/modules/fckeditor/lib/editor/fckeditor.htm....

So I opened the file /modules/fckeditor/fckeditor.module
on line 120
$link = "$base_path/editor/fckeditor.html?InstanceName=edit-$name";
should be modified to this
$link = "$base_path"."editor/fckeditor.html?InstanceName=edit-$name";

Seasnark also refer this issue in the post
http://drupal.org/node/18442#comment-31019

This can also solve the problem when inserting image.