it likes this in my ubuntu :
Could not initialize the package information
A unresolvable problem occurred while initializing the package information.
Please report this bug against the 'update-manager' package and include the following error message:
'W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy/restricted Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy/multiverse Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy-updates/restricted Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy-updates_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy-updates/multiverse Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy-updates_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy-backports/restricted Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy-backports_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy-backports/multiverse Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy-backports_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy-security/restricted Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy-security_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://cn.archive.ubuntu.com gutsy-security/multiverse Packages (/var/lib/apt/lists/cn.archive.ubuntu.com_ubuntu_dists_gutsy-security_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy/main Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy_main_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy/restricted Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy/universe Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy_universe_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy/multiverse Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-backports/main Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-backports_main_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-backports/restricted Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-backports_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-backports/universe Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-backports_universe_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-backports/multiverse Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-backports_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-proposed/main Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-proposed_main_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-proposed/restricted Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-proposed_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-proposed/universe Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-proposed_universe_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-proposed/multiverse Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-proposed_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-security/main Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-security_main_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-security/restricted Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-security_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-security/universe Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-security_universe_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-security/multiverse Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-security_multiverse_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-updates/main Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-updates_main_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-updates/restricted Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-updates_restricted_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-updates/universe Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-updates_universe_binary-i386_Packages), W:Duplicate sources.list entry http://ubuntu.cn99.com gutsy-updates/multiverse Packages (/var/lib/apt/lists/ubuntu.cn99.com_ubuntu_dists_gutsy-updates_multiverse_binary-i386_Packages), E:Problem parsing dependency Depends, E:Error occurred while processing poppler-data (NewVersion1), E:Problem with MergeList /var/lib/apt/lists/ubuntu.cn99.com_ubuntu-cn_dists_gutsy_main_binary-i386_Packages, E:The package lists or status file could not be parsed or opened.'
I also get the following error, while trying to add/remove programs.
"Failed to check for installed and available applications
This is a major failure of your software management system. Please check for broken packages with synaptic, check the file permissions and correctness of the file '/etc/apt/
I haven't touched source.list, and when i run sudo apt-get update I get the following error:
"Reading package lists... Error!
E: Problem parsing dependency Depends
E: Error occurred while processing gaim (NewVersion1)
E: Problem with MergeList /var/lib/
E: The package lists or status file could not be parsed or opened."