[Koha] ubuntu upgrade

[regina kivuyo]

i have the problem in ubuntu upgrade when trying to install koha, i have
the problem in koha because i cannot seach any information from system , i
have already to use both ubuntu 12.04 and the ubuntu 14.04 but the problem
both of it is upgrade by sudo apt-get upgrade
when i upgrade it give the
saut at saut-HP-Pro-3400-Series-MT:~$ sudo aptitude upgrade
The following packages will be upgraded:
  libxatracker1-lts-quantal
1 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 103 kB of archives. After unpacking 1,024 B will be used.
Do you want to continue? [Y/n/?]
Err http://tz.archive.ubuntu.com/ubuntu/ precise-updates/main
libxatracker1-lts-quantal i386 9.0.3-0ubuntu0.4~precise1
  Connection failed
0% [Working]E: Failed to fetch
http://tz.archive.ubuntu.com/ubuntu/pool/main/m/mesa-lts-quantal/libxatracker1-lts-quantal_9.0.3-0ubuntu0.4~precise1_i386.deb:
Connection failed

E: Failed to fetch
http://tz.archive.ubuntu.com/ubuntu/pool/main/m/mesa-lts-quantal/libxatracker1-lts-quantal_9.0.3-0ubuntu0.4~precise1_i386.deb:
Connection failed


i tried to install both two  Option A: Download Koha via Git (optional)

and
 Option B: Download Koha from http://download.koha-community.org
but both i can search
when i tried to such
it give the answer like this

*No results found!*

No results found for that in Mario Mgulunde Learning Resource Center
catalog. [image: Subscribe to this search]
<http://41.59.3.92:85/cgi-bin/koha/opac-search.pl?idx=kw&q=history&format=rss2>
the problem also i cannot build the index
plsease help me
i search from google but i failed to solve it


-- 
regina