Hey,
I know a lot of people had this problem and I wasn't able to find an answer anywhere, so I decided to post what I found to be a solution.

The problem is that whenever up2date is lauched and updates start to download, error messages come up saying the gpg signature is invalid and the package is corrupt.

I went to the Fedora ftp via fedora.redhat.com and tried to download updates manually then install them, but received error messages when trying to install them. I looked in the folder that I downloaded the rpms to and found their sizes differed from the size listed on the ftp site. I also noticed that the rpms took a long time to download. So I went to downloads > mirrors then found a mirror closest to me and was able to download and install the rpms normally.

Then, I editted the /etc/sysconfig/rhn/sources file to include any of these mirrors, then up2date worked fine. So, I conclude that the problem is that the Fedora site is too busy/slow and is causing download errors, causing the gpg signature to be corrupted.

If this is wrong, or this problem was solved a long time ago, let me know, and I'll apologize for wasting your time for reading this.

I suspect that you are on the right track in regards to the problem being realted to the default servers having to much load. On boxes that are set up with default values I notice that shortly after larger upgrades are made available I will run into error messages along the lines of gpg signatures being corrupted. I think what is actually happening is that the download is simply failing (timing out) due to excessive load, and the incomplete file does not match the built in hash check, hence it spits out the gpg signature error.

my problem is that when up2date runs i get an error message that the system isn't registered. funny huh?

my previous post
**************************************************************************************************** ***************
made the mistake of running up2date --register on my fedora system
i now cannot recieve any updates i get this error message....


Error Message:
Please run rhn_register (or up2date --register on Red Hat Linux 8.0)
as root on this client
Error Class Code: 9
Error Class Info: Invalid System Credentials.
Explanation:
An error has occurred while processing your request. If this problem
persists please enter a bug report at bugzilla.redhat.com.
If you choose to submit the bug report, please be sure to include
details of what you were trying to do when this error occurred and
details on how to reproduce this problem.



any ideas on how to fix this? RH wants me to activate via serial # for a rh enterprise linux
version which i don't have!!
i recieved a e-mail from Rh with this ....

The following system has been registered to your account in
the past day, but could not be entitled to service:

fedora2

This system will be unable to receive updates until you've activated
your product. For more information, please visit:

https://www.redhat.com/now

--the Red Hat Network Team
******************************************************************************************
Question 1
how do i restore my up2date manager back to the original way?

Question 2
if i can't, am i screwed and have to do a fresh install?

Question 3
if i type this....

code:

up2date --configure



it shows me a URL
https://xmlrpc.rhn.redhat.com/XMLRPC

finally to the question, can i change that URL to somewhere different? if so, where?
now that i have killed you all with this.......
please help!!!

I don't think I've had this problem before, but I have some questions that might help me answer the problem.

1. How do you launch up2date? From terminal or from the red button in the system tray?

2. Where do you get the message that tells you to register? When I first install Fedora and try to update, I always get a pop up message asking me to register with the RHN. It happens a few times and I just always hit the "Register with RHN" button untill it stops asking me.

I may not be able to help since you're running Fedora Core 2, which I have no experience with. One thing I can suggest in opposition to a fresh install of the whole OS is to remove up2date completely then reinstall it with an rpm. However, I've never done this myself, so I make no guarantees that it will work. In theory, it should help.

To do that, first find the package name of up2date you have installed with <rpm -q up2date>. Then, to remove it use <rpm -ev up2date-versionhere.rpm> (I'm not sure if you need the .rpm at the end or not). Then, you can find an rpm of the latest version of up2date at http://fedora.redhat.com/ (go to downloads > mirrors > (find a mirror closest to you) > updates > 1 (there is no up2date update for Fedora Core 2) > (your arch here) > then scroll down to find the up2date rpm. Download it and save it, then install it with <rpm -ivh packagenamehere.rpm>.

This probably should only be attempted as a 2nd last resort (the last being a fresh install of the entire OS) and I'm really not sure if it will work, but if you have any questions along the way, please ask and I'll do my best to help.

I'm having this same problem myself. I keep hiting "Register with RHN", but so far, it still bothers me everytime.
And it also does not show me any available updates. Either the RHN icon is blue at all times, or a big "?" (which I've never saw before).
If it keeps like this, I will try to remove up2date and reinstall it.

It seems like with each release of Fedora, a new problem with up2date arises. So far, with FC4, it seems like you can just hit the register later option and then launch up2date with no problems.

This post is old and I have since switched to yum for managing packages and updates. up2date actually uses yum in the backend so there isn't much difference. If you're particularly attached to a gui, you might want to try yum ex, a gui for yum. I've never used to I can't put an endorsement behind it. Otherwise, I would really recommend using yum.

I hope this helps, post back if you need.