Hi,
I'm having trouble with update manager on Ubuntu 12.10.
I've included a screen shot of the message I get but I don't know what "third party repositories" are or how to disable them, I would very much appreciate some help with this.

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Well, I'd to what it recommends, in terminal.

"Third party repositories" would be things like PPAs and repositories other than the default software repositories created and maintained by Ubuntu.

For example, I can enable updating Opera automatically by adding the Opera repositories to my configuration, but it is not an official Ubuntu repo.

You know I feel like giving up with the whole thing, I posted this thread on the "newbie" section thinking I would get sensible replies but no instead I get gobbledegook about "PPA's" for god sake what are they? and terminal doesn't recognise the command at all.
When someone submits a post in this section it would be pretty safe to assume that they know little or nothing about the intricacies of Ubuntu. So come on if you want to help, try plain English and not a load of in talk!

Dont give up man. if you type in terminalthe computer will ask you for your password just type it and hit enter and let it do its thing
then once is done you can type on the same terminal
if you are asked for password just type it again and hit enter, let it do is thing then you type
password again if asked and let it do its thing

Hope that works fine for you.
Good luck

1 members found this post helpful.

Newbie, yes, but it is also assumed that since you decided to take the plunge into Linux, you are willing to learn, instead of dismissing solutions as "gobbledegook." Did you actually try using the terminal, with the commands given? You might want to put the terminal on your dock, there, it will come in handy.

FYI - there's also a dedicated Ubuntu forum:

http://ubuntuforums.org/forum.php

Don't be frustrated! Linux is a major learning curve, and you must be patient.

Copy & paste the exact commands that Tron-0074 suggested into your terminal.
Copy & paste the resulting output from the terminal here so people can help you.
"Terminal doesn't recognise the command at all," we can't help you.
Copy & paste the exact commands and error message, we can totally help you.

Until you have learned what are "PPA's" and have learned a few basic concepts about repositories and package management, then I recommend you be very cautious when adding unsupported third-party repos to your system! Stick with the Ubuntu-approved repositories, and you should never have this type of error message. I see this kind of question all the time on Ubuntu Forums; fortunately it is usually an easy fix.

Hi,
Pardon my earlier tantrum,I followed TroN-0074's advice and everything is back to normal.
Thank You, Thank you, Thank you

Excellent! I'm glad that worked for you.