Usability issues in My private files

There are some usability issues and bugs when using My private files- Moodle 2.0 Preview 4+ (Build: 20100824).

1)

• from within the home page click on Navigation > My profile > My private files
• page show "Manage my private file" button, which in turn let you access the private file area
• there is no apparent reason why a users should not be pointed directly to the second page. In other words, the first page with only the button "Manage my private file" is useless

2)

• files uploaded in My private files disappear

3)

• when accessing My private files from a course using My private file block, users is pointed to the right page, however breadcrumb link are no more belonging to the course

4)

• in My private files, there are two buttons "Save changes" and "Cancel". It is quite unclear what they are supposed to do.