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And, will may my applications be as is? Am I going to have any compatibilty issues with applications? Is it possible even using a live cd to install the newest version of Ubuntu over the existing one.

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Do you want to upgrade from 12.10 to 13.04 using the 13.04 Live DVD/USB? Note 13.04 is too big to fit in a CD. –  user68186 Jul 29 '13 at 19:10
    
yes, but I have a slow internet connection, so I won't upgrade from the software updater –  Jahed Hossain Jul 29 '13 at 19:14
    
Yes you should get a prompt to upgrade when you boot from Live DVD and start the install process. Some applications will be upgraded and some may be. You will have to reinstall those applications. Your home folder and data should be preserved. However, to be safe make backup copies of your personal data, photos, music, videos, etc. –  user68186 Jul 29 '13 at 19:18
    
What is with these damn "possible duplicates", its so annoying. I searched for my problems before I ask them. Can't you just answer the damn question instead of marking it as a "possible duplicate"? Anyways I think that that question's answer helped though @user68186 –  Jahed Hossain Jul 29 '13 at 19:27
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marked as duplicate by user68186, Radu Rădeanu, Eric Carvalho, Kevin Bowen, Eliah Kagan Jul 30 '13 at 15:22

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

2 Answers

Yes, when you install there will be an option to install Ubuntu 13.04 keeping your old files and programs. However, some settings maybe reset. You should make a backup of any important data in case it get's lost in the upgrade.

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You can use this guide to upgrade Ubuntu 13.04 from Ubuntu 12.10 http://www.ubuntu.com/download/desktop/upgrade

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I want to know if its possible with a live cd, without losing my apps and configurations. And is there going to be any problems with my applications? –  Jahed Hossain Jul 29 '13 at 19:19
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