[ubuntu] Internet shut down middle of Ubuntu installation

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http://ubuntuforums.org – So internet broke down middle of installation of ubuntu while it was downloading updates. Is this bad or should i reinstall ubuntu. However installer just went to end and it seems ok, i haven't seen any problems yet except freezing of screen time to time but i am not sure if it has come always with ubuntu. Is it ok or do i have to reinstall everything. Do it just automatically skip updates or do it affect someway quality of install? (Hardware)