I don't really know what happened, after reboot I got many crash messages, and if I would open Firefox or Synaptic, they would crash. Synaptic returns this:
E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_raring-security_main_i18n_Translation-en E: The package lists or status file could not be parsed or opened. E: _cache->open() failed, please report.
Then crash icon on the top panel appeared, and there was some error about mergelist. I googled, and found this
sudo rm /var/lib/apt/lists/* -vf
sudo apt-get update That didn't work. To be able to work in browser I deleted all files in
/var/lib/apt/lists. If I try
sudo apt-get update, I get this:
W: Failed to fetch gzip:/var/lib/apt/lists/partial/ua.archive.ubuntu.com_ubuntu_dists_raring_main_source_Sources Hash Sum mismatch W: Failed to fetch gzip:/var/lib/apt/lists/partial/ua.archive.ubuntu.com_ubuntu_dists_raring_restricted_source_Sources Hash Sum mismatch W: Failed to fetch gzip:/var/lib/apt/lists/partial/ua.archive.ubuntu.com_ubuntu_dists_raring_universe_source_Sources Hash Sum mismatch W: Failed to fetch gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_raring-security_main_source_Sources Hash Sum mismatch W: Failed to fetch gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_raring-security_universe_source_Sources Hash Sum mismatch W: Failed to fetch gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_raring-security_main_binary-i386_Packages Hash Sum mismatch W: Failed to fetch gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_raring-security_universe_binary-i386_Packages Hash Sum mismatch E: Some index files failed to download. They have been ignored, or old ones used instead.
I do not want to reinstall the system. How could I fix that? Thanks.