Problem Updates and install application

hello, i get problem to updates, what wrong?
and i cant install gaim after success download, do you have idea?

------------ update system ---------------------
root@0[init.d]# apt-get update
Hit http://2004.mepis.org testing/main Packages
Hit http://2004.mepis.org testing/main Release
Get:1 ftp://metalab.unc.edu unstable/main Packages
Err ftp://metalab.unc.edu unstable/main Packages
Unable to fetch file, server said '/pub/linux/devel/lang/java/blackdown.org/debian/dists/unstable/main/binary-i386/Packages.gz: No such file or directory '
Get:2 ftp://metalab.unc.edu unstable/main Release
Hit ftp://ftp.nerim.net unstable/main Packages
Ign ftp://metalab.unc.edu unstable/main Release
Hit ftp://metalab.unc.edu unstable/non-free Packages
Hit ftp://ftp.nerim.net unstable/main Release
Hit ftp://metalab.unc.edu unstable/non-free Release
Hit ftp://ftp.us.debian.org testing/main Packages
Hit ftp://ftp.us.debian.org testing/main Release
Hit ftp://ftp.us.debian.org testing/contrib Packages
Hit ftp://ftp.us.debian.org testing/contrib Release
Hit ftp://ftp.us.debian.org testing/non-free Packages
Hit ftp://ftp.us.debian.org testing/non-free Release
Hit ftp://ftp.us.debian.org unstable/main Packages
Hit ftp://ftp.us.debian.org unstable/main Release
Hit ftp://ftp.us.debian.org unstable/contrib Packages
Hit ftp://ftp.us.debian.org unstable/contrib Release
Hit ftp://ftp.us.debian.org unstable/non-free Packages
Hit ftp://ftp.us.debian.org unstable/non-free Release
Failed to fetch ftp://metalab.unc.edu/pub/linux/devel/lang/java/blackdown.org/debian/dists/unstable/main/binary-i386/Packages.gz Unable to fetch file, server said '/pub/linux/devel/lang/java/blackdown.org/debian/dists/unstable/main/binary-i386/Packages.gz: No such file or directory '
Reading Package Lists... Done
W: Couldn't stat source package list ftp://metalab.unc.edu unstable/main Packages (/var/lib/apt/lists/metalab.unc.edu_pub_linux_devel_lang_java_blackdown.org_debian_dists_unstable_main_binary-i386_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
E: Some index files failed to download, they have been ignored, or old ones used instead.

-------------------------- Gaim -------------------------------------
root@0[init.d]# apt-get install gaim
Reading Package Lists... Done
Building Dependency Tree... Done
Package gaim is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
W: Couldn't stat source package list file: testing/main Packages (/var/lib/apt/lists/_mnt_cdrom_dists_testing_main_binary-i386_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
E: Package gaim has no installation candidate