I am receiving this error message when attempting to check for regular updates:

An unresolvable problem occurred while initializing the package information.

Please report this bug against the 'update-manager' package and include the following error message:

'E:Encountered a section with no Package: header, Eroblem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise_restric ted_binary-i386_Packages, E:The package lists or status file could not be parsed or opened.'

Any ideas? The only thing that was different was immediately prior to getting this error message I arrived at work and hadn't logged into the wireless network but attempted to check for updates. I canceled, rebooted, and logged into the wireless network. Now each time I attempt to check for updates I get the above error message.

Thanks