Permitted file extensions field does not work properly

Versions:
Drupal 7.0
IMCE 7.x-1.1

WYSIWYG 7.x-2.0
CKEditor 3.5 (revision 6260)
IMCE Mkdir 7.x-1.0-beta2
IMCE Wysiwyg bridge 7.x-1.x-dev (11/07/10)

It is not possible to upload files with extensions other than "jpg jpeg gif png txt doc xls pdf ppt pps odt ods odp".

For exemple a swf file can't be uploaded.

Restricting the uploaded extensions for example just to txt files works well, but if I try to add extensions that are not in the list above or if I use * (like the default for User-1 Profile) in the "Permitted file extensions" field the uploads are still restricted to the above list.

This behaviour happens in the User profile File Browser Tab and in the wysiwyg editor, so I think the problem is in the IMCE module.

Debugging the code this problem seems to be related to the fact that the structure of the $validators array() used in line 287 of imce.page.inc does not match the expected structure of file_save_upload().