I'm newish to ubuntu, or at least not learning very fast. Today an icon of a red circle with a white bar through it tells me to check Package Manager. It also tells me the error is "serious". I have no problems otherwise. The error message is:
E:Encountered a section with no Package: header, Eroblem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise_main_i1 8n_Translation-en, E:The package lists or status file could not be parsed or opened.
Package Manager says the same thing.
Should I be worried?