I experienced a small theater with a disk on my laptop. After Fix the problem with apt-get update after the final scour not pleasant end of the process
E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/debian.ipacct.com_debian_dists_sid_contrib_binary-i386_Packages E: The package lists or status file could not be parsed or opened.
As usual problem is extremely obvious /var/lib/apt/lists/debian.ipacct.com_debian_dists_sid_contrib_binary-i386 can not be read correctly. The fix is as elementary as the diagnosis of the problem:
rf -f /var/lib/apt/lists/*
In the end, the result-forcing sync apt.