E: Couldn't rebuild package cache

[lina <lina.lastname@gmail.com>]

Hi,

I don't know how to fix the following problem,

W: Failed to fetch
gzip:/var/lib/apt/lists/partial/ftp.us.debian.org_debian_dists_wheezy_main_binary-amd64_Packages:
Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old
ones used instead.
E: Couldn't rebuild package cache


Thanks ahead for the suggestions,

Best regards,