When running the the add/remove programs app I get this error
Error Type: <type 'exceptions.AttributeError'>
Error Value: 'NoneType' object has no attribute 'timestamp'
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 2202, in <module>
That's a shame and all, but it's not a site maintenance bug.
Can you please tell us what you were doing? What version are you using?
Closing this bug report as no further information has been provided after more than 6 weeks. Please feel free to reopen this bug if you can provide the information asked for. Thanks!