[Bug 1357796] Re: upgrade from 12.04 to 14.04 dose not work whit multiple machines

[Joni-Pekka Kurronen]

update-manger can freeze whit apt-cacher-ng.
Getting started again is not straight foward
I have still one machine in jam, can not get upgardeing,
it hangs while "calculating installation"

Useing 02proxy setting. apt-cacher.ng is at allready
updated server.

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https://bugs.launchpad.net/bugs/1357796

Title:
  upgrade from 12.04 to 14.04 dose not work whit multiple machines

Status in “apt-cacher-ng” package in Ubuntu:
  New
Status in “update-manager” package in Ubuntu:
  New

Bug description:
  
  apt-cacher-ng can freeze / JAM if more than one machines are upgradeing
  from 12.04 to 14.04.

  Machine which is in upgrade can jam/freeze also, for ever, also
   file lock's remains and those are bit hard to find due sudo update-manager -d
    dose not complain all locks. apt-get update reports old lokcs left behibd.

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