Update is telling me my package system is broken - the instruction to fix it doesn't work - what to do?

I got a red icon on the taskbar that tells me to run Package Manager. I ran Software Updater and got the following error:

============================== The package system is broken Check if you are using third party repositories.

This is kind of a strange one, I think. I downloaded and installed Linux yesterday, from the LiveUSB. The install went fine, but when I try to run the update manager, I get an error. Like so:

Quote:

The package system is broken. Check if you are using third party repositories.

screen shot:

text:

"Check if you are using third party repositories.

I am getting the following error with update-manager:

The package system is broken

Check if your are using third party repositories. If so disable them, since they are a common source of problems.

Quote:

Check if you are using third party repositories.

Im a newbie to ubuntu. Ive come across this while trying to install synaptic manager. However, later I observed that I get this sort of error whenever I try to install anything.

Also, when i go to update manager and click install updates, it displays this:

*Check if you are using third party repositories.

I have the message:

Error Broken count >0

Check if you are using third party repositories.

Hi, I'm having trouble with dependencies. When I try and update Ubuntu (I'm on 11.10), I get the following error message:

Check if you are using third party repositories.

Ok, so I run apt updates and all that, but when I type in sudo apt-get install wine1.5 in terminal.

I get this

The following packages have unmet dependencies: wine1.5 : Depends: wine1.5-i386 (= 1.5.21-0ubuntu1) but it is not installable E: Unable to correct problems, you have held broken packages.

If I try the software center, I get this message.