Unable to Update.

[Brian McKee]

On Wed, Jun 3, 2009 at 9:05 AM, Roger Benham <rogerbenham2000 at yahoo.ca> wrote:
> I have tried rebooting several times using the four options that I now have
> at start-up. Two being repair modes. I'm using 9.04. This problem started
> nearly a month ago.
> System-Administration-Update Manager produces a flicker of the update page
> which then vanishes. On my top line panel I have a red No Entry symbol.
> Updating seems impossible.

The GUI isn't giving us much to work with.  (or at least me :-)
If we do this from the command line we will get more information.
Start normally and log in.
Open a terminal (Under accessories)
Type

  sudo aptitude update && sudo aptitude safe-upgrade

and post here the exact output you get.
This will either update your system or give us some solid information
to find out what to do next.

Brian