[ubuntu] Can I upgrade to v.12 from 8.10 Intrepid easily?

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http://ubuntuforums.org – Hi guys, Need to upgrade an old Sony as a slave for Her new tablet. It is running V. 8.10 Intrepid. THe old system is very well setup for Her as a user and isn't exhibiting any problems right now - everything works ok. SO.... should I even think about updating? If I do from that far back how safe would it be for the existing programs? (Would I have to painfully multiple version update? (Hardware)