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I am a novice ubuntu user and 13.04 was my first experience with linux, now when i was upgrading from 13.04 to 13.10 using update manager, after fetching the data when it was installing updates, it asked me for replacing several config files. but i refused and instead asked to keep the old config file. during installation of samba4 there was some error and the upgrade aborted with a error message that "update not successful, system may be in unstable state". what should i do now.

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