Software Updates problem

[PeterTheGreat]

I get unspecified transaction error and then it seems to stop updating.

[SlowJet]

List the output of
su -
yum clean metadata
yum check-update

SJ

[Voidgere]

Ok, I too was having the unspecified transaction error. I did a search here and found this thread. I tried the terminal commands above and everything processed fine. I closed the the terminal and attempted another automatic software update. I indicated another error as presented below:

Error Type: <class 'yum.Errors.RepoError'>
Error Value: Error getting repository data for installed, repository not found
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 3125, in <module>
main()
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 3122, in main
backend.dispatcher(sys.argv[1:])
File : /usr/lib/python2.6/site-packages/packagekit/backend.py, line 710, in dispatcher
self.dispatch_command(args[0], args[1:])
File : /usr/lib/python2.6/site-packages/packagekit/backend.py, line 657, in dispatch_command
self.update_packages(only_trusted, package_ids)
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 1948, in update_packages
signed = self._is_package_repo_signed(pkg)
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 1437, in _is_package_repo_signed
repo = self.yumbase.repos.getRepo(pkg.repoid)
File : /usr/lib/python2.6/site-packages/yum/repos.py, line 121, in getRepo
'Error getting repository data for $s, repository not found' $ (repoid)

I notice that it says repo not found but could not decipher which repo it was referring to so that I could download the proper information and continue the update. Any help would be appreciated.