cat sources.list
deb http://ftp.us.debian.org/debian/ stable main contrib non-free
deb http://security.debian.org/ stable/updates main contrib non-free
deb http://ftp.us.debian.org/debian/ testing main contrib non-free
deb http://security.debian.org/ testing/updates main contrib non-free
deb http://ftp.us.debian.org/debian/ unstable main contrib non-free
deb http://ftp.us.debian.org/debian/ experimental main

jindal:/etc/apt# apt-get update
Get: 1 http://ftp.us.debian.org stable Release.gpg [189B]
Get: 2 http://security.debian.org stable/updates Release.gpg [189B]
Get: 3 http://ftp.us.debian.org testing Release.gpg [189B]
Get: 4 http://security.debian.org testing/updates Release.gpg [189B]
Hit http://security.debian.org stable/updates Release
Hit http://security.debian.org testing/updates Release
Get: 5 http://ftp.us.debian.org unstable Release.gpg [189B]
Ign http://security.debian.org stable/updates/main Packages/DiffIndex
Ign http://security.debian.org stable/updates/contrib Packages/DiffIndex
Ign http://security.debian.org stable/updates/non-free Packages/DiffIndex
Ign http://security.debian.org testing/updates/main Packages/DiffIndex
Get: 6 http://ftp.us.debian.org experimental Release.gpg [189B]
Ign http://security.debian.org testing/updates/contrib Packages/DiffIndex
Ign http://security.debian.org testing/updates/non-free Packages/DiffIndex
Ign http://security.debian.org stable/updates/main Packages
Ign http://security.debian.org stable/updates/contrib Packages
Ign http://security.debian.org stable/updates/non-free Packages
Hit http://security.debian.org testing/updates/main Packages
Hit http://security.debian.org testing/updates/contrib Packages
Hit http://security.debian.org testing/updates/non-free Packages
Hit http://security.debian.org stable/updates/main Packages
Hit http://security.debian.org stable/updates/contrib Packages
Hit http://security.debian.org stable/updates/non-free Packages
Hit http://ftp.us.debian.org stable Release
Hit http://ftp.us.debian.org testing Release
Hit http://ftp.us.debian.org unstable Release
Get: 7 http://ftp.us.debian.org experimental Release [66.9kB]
Ign http://ftp.us.debian.org stable/main Packages/DiffIndex
Ign http://ftp.us.debian.org stable/contrib Packages/DiffIndex
Ign http://ftp.us.debian.org stable/non-free Packages/DiffIndex
Hit http://ftp.us.debian.org testing/main Packages/DiffIndex
Hit http://ftp.us.debian.org testing/contrib Packages/DiffIndex
Hit http://ftp.us.debian.org testing/non-free Packages/DiffIndex
Hit http://ftp.us.debian.org unstable/main Packages/DiffIndex
Hit http://ftp.us.debian.org unstable/contrib Packages/DiffIndex
Hit http://ftp.us.debian.org unstable/non-free Packages/DiffIndex
Get: 8 http://ftp.us.debian.org experimental/main Packages [180kB]
Ign http://ftp.us.debian.org stable/main Packages
Ign http://ftp.us.debian.org stable/contrib Packages
Ign http://ftp.us.debian.org stable/non-free Packages
Hit http://ftp.us.debian.org stable/main Packages
Hit http://ftp.us.debian.org stable/contrib Packages
Hit http://ftp.us.debian.org stable/non-free Packages
Fetched 248kB in 45s (5458B/s)
Reading package lists... Error!
E: Dynamic MMap ran out of room
E: Error occurred while processing libbonoboui2-0 (NewVersion1)
E: Problem with MergeList /var/lib/apt/lists/ftp.us.debian.org_debian_dists_experimental_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.