Kubuntu Installer crashes after taking user info

[Bharat B]

I encounter this while installing Kubuntu (amd64 and x64) from live usb

INSTALLER CRASHED:

Traceback(most recent call last):
  File "/usr/lib/ubiquity/ubiquity/frontend/kde_ui.py",line 957,in
on_next_clicked
     self.dbfilter.ok_handler()
  File "/usr/lib/ubiquity/plugins/ubi-usersetup.py",line806, in ok_handler
     self.ui.hostname_error(make_error_string(self.controller,errors))
AttributeError: 'Page' object has no attribute 'controller'

When i tried installing it with alternate cd it shows an error of apt configure failed .
I didn't get how to enter proxy address with authentication though i tried all possible cases with it.
It would be better if you guys can put up some king of tutorial for apt-proxy settings .

Finally I installed 32 bit edition where the installer worked good but not the system it was not able to fetch any apt repositories
the muon update manager was not able to check for updates also.

Earlier to all these when I had my system running good there was a problem like the screen used to stop display every ten seconds though i have made the required changes in the power options.(hoping an virus effect SECURITY vulnerability)

[Marc Deslauriers (mdeslaur)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.