Units permissions, aka statuses

Imported From: http://groups.google.com/group/in-portal-dev/browse_thread/thread/ca4b0f6705f152c4#

Hello guys.
I think that the way how permissions system now works, especially how it
informs an end-user about insufficient permissions should be changed.
How it works now, for example: imagine the page on front-end which
contains some list of records (or separate record, doesnt really
matter). Each record belongs to some in-portal registered user (comment,
blog post, profile info etc.). And some details of this user are printed
on the template using u_Field. What i get right now if the user in that
list becomes Disabled/Pending - is blank "No Permission" page.
How this could happen? Admin goes to the admin interface, selects
disabled user and submits the record (seeing no warnings).
Front-end user submits record by himself, in later time admin for some
reason disables that user.
In both cases page on front-end becomes broken.

This problem was identified on In-Portal 5.0.2