This is making my life really hard.
Any help?
Which version of openSUSE are you running, 11.1 beta or RC1? Maybe one of your repos is no longer valid. Did you try zypper on the commandline to get some meaningful output? If nothing helps, just delete all your repos and add them again.
Okay, zypper and what modifier?
Well, you can do “zypper ref” (then it tries to refresh your repositories) and see which repos are broken and then you can type “zypper --help” to see what else it can do for you. You can try “zypper in I-dont-know-what-package”, just to see if installing works in the commandline. You can also post the output of “zypper lr”, then we see which repos you have enabled. Which version of openSUSE are you running by the way? That is important to know when you get asked for help.
Linux L1y8 (Kernel 2.6.25.18-0-2pae)
…
linux-l1y8:/home/marianox # zypper lr
# | Alias | Name | Enabled | Refresh
---+--------------------------------------------------------------+---------------------------+---------+--------
1 | openSUSE-DVD 11.0 | openSUSE-DVD 11.0 | Yes | No
2 | 11.0 | 11.0 | Yes | Yes
3 | http://download.opensuse.org/distribution/11.0/repo/non-oss/ | Main Repository (NON-OSS) | Yes | Yes
4 | Main Update Repository | Main Update Repository | Yes | Yes
5 | PK_TMP_DIR | PK_TMP_DIR | Yes | Yes
6 | repo-debug | openSUSE-11.0-Debug | No | No
7 | http://download.opensuse.org/update/11.0/ | Main Update Repository | Yes | Yes
8 | openSUSE-11.0-Updates | openSUSE-11.0-Updates | Yes | Yes
9 | http://download.opensuse.org/distribution/11.0/repo/oss/ | Main Repository (OSS) | Yes | Yes
10 | NVIDIA Repository | NVIDIA Repository | Yes | Yes
11 | Yast1 | Yast1 | Yes | Yes
Hm… no errors during “zypper ref”? … you have two update repos, (1) Main Update Repository and (2) openSUSE-11.0-Updates. One should be enough. Then you have the oss and non-oss repos and the DVD (all three are ok) plus a repo called 11.0. I don’t know that repo. Nor do I know PK_TMP_DIR or Yast1 repos. I am more the type of user who adds the packman repository first 
Did you find out which repo causes your exception, e.g with “zypper ref”? If it tells you that a repo is broken you can remove it with “zypper rr the_repo_that_does_not_work”. Of course you can do all these things in Yast, too.
[sidenote]
Plus, in Yast you can you can assign priorities to repositories. That is particularly useful when you don’t want to insert your dvd all the time. In that case, just give the DVD a higher number (mine is 120) and it will have a lesser priority over the online (oss and non-oss) repos (which are 99 here).
[/sidenote]
Thanks a lot for the info! =)
Well, the thing is that everytime I try to install MadWifi rpm’s I get the “repo exception” error and no other details.
Where is madwifi? You can figure out in Yast. Search for your desired package, mark it and click the “Versions” tab. Then delete the repo and add it again later. You know, there’s a repository cache. That may be broken. You can really delete all of the repos and add them again, just to kill the cache (Maybe there’s another way to do it).
You mean the software management app? Cos since I’ve installed MadWifi, I have never seen any sort of app or nothing related to it.
I get a lot of “lib.c.6” requests as well, and I’m not able to find this either. =S