General Support: Deleting comments

I don't know if it is a bug ,somebody should check it.

1. I (or somebody) leave a comment on a photo.
2. Then I open CMS /plogger/plog-admin/
3. Manage > Collection > Album > Picture > click on picture name ...
4. I check the comment , or more and hit Delete checked.
5. "Are you sure....?" - Yes --> You have deleted 1 entry successfully. {example}
6. The comment wasn't deleted.

but ...

3. Feedback > Check the comment > Delete checked = WORKS!

I have the same issue on ...
VERSION: 1.0-RC1-Rev607
VERSION: 1.0-RC1
two separate servers.

VERSION: 1.0-RC1
Server Software: Apache/2.2.3 (Debian)
PHP Version: 5.2.9-0.dotdeb.1 (CGI-FCGI)
MySQL Version: 5.0.67-0.dotdeb.1-log
GD Version: bundled (2.0.34 compatible) with JPEG support
Session Save Path: /var/lib/php5
File Upload Size Limit: 6MB
Temporary Memory Limit: 32M
Code Run Time Limit: 60s
safe_mode enabled

VERSION: 1.0-RC1-Rev607
Server Software: Apache/2.2.14 (Fedora)
PHP Version: 5.3.2 (APACHE2HANDLER)
MySQL Version: 5.1.44
GD Version: bundled (2.0.34 compatible)
Session Save Path: /var/lib/php/session
File Upload Size Limit: 2MB
Temporary Memory Limit: 128M
Code Run Time Limit: 30s
safe_mode enabled

Using the classic theme. Everything else works fine.
Any idea ?

EDIT : Just made a fresh install RC1. Same problem.

EDIT 2 : Same problem here since 2005. O_o