Seeing a weird theme update notification for directory theme

Hi,

I'm seeing this weird theme update notification for directory theme. When I update it, the theme changes. Directory theme gets completely overwritten by this new theme that has nothing to do with the directory theme.

Furthermore, there was a theme folder called 'default' and it was for the directory theme. This theme folder has been overwritten by this new one.

Here's the details of this new theme:

/*
Theme Name: Default
Theme URI: http://wordpress.org/
Description: The default WordPress theme that graced version 1.5 to version 2.9, based on the famous Kubrick.
Version: 1.7.2
Author: Michael Heilemann
Author URI: http://binarybonsai.com/
Tags: blue, silver, white, two-columns, fixed-width, right-sidebar, fixed-width, custom-header, threaded-comments, sticky-post, rtl-language-support, translation-ready
Text Domain: kubrick

Kubrick v1.5
http://binarybonsai.com/kubrick/

This theme was designed and built by Michael Heilemann,
whose blog you will find at http://binarybonsai.com/

The CSS, XHTML and design is released under GPL:
http://www.opensource.org/licenses/gpl-license.php

*/

How to resolve this?
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