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I'm here to ask the following:

Everytime I update (no matter on what computer), i get errors such as broken desktop, kernel panics, i have no sound (although i can solve it by forcing the reload of alsa-base), Ubuntu didn't power off after fresh installation (again i could solve it by altering the speech-dispatcher configuration)... The installations were broken after: Updating from unknown (and strange) version of ubuntu to 12.04, then to 12.10 LTS, and finally to 13.04 and everyting stopped from working normally on a netbook. And i got a kernel panic after upgrading to the latest kernel, i could only enter ubuntu by logging into an older kernel, Then i reinstalled ubuntu and got no sound, and ubuntu couldn't power off on a notebook.

The only way i know my computer keeps being stable, is to reject the updates from the update manager telling it to remember me later. Is there a way to update Ubuntu without getting these errors?

Far from that, Ubuntu and its community are great.

Sorry for my english if its bad and hard to read...

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Do you say you followed that update procedure on more than one machine? You wrote 'no matter on what computer', so I guess you have more than one machine showing described behavior. Depending on whether it is one notebook only or more the answer may be very different (more machines might suggest network problems resulting in corrupted packages or something similar etc.). –  moon.musick Aug 24 '13 at 16:49
    
Also, power off problems might point to outdated BIOS - I understand that if you updated from some very old Ubuntu version, the hardware is not really new? –  moon.musick Aug 24 '13 at 16:50
    
I've always tried to update with the update manager... Maybe you're right with the network problems, since i've been noticing annoying bandwidth problems, but i don't know if the problem is related to the bandwidth... When i updated the netbook with the strange ubuntu version, i noticed that it froze when downloading some packages... –  Nonezety Aug 24 '13 at 17:51
    
It might be that the connection is unstable. Also, it is possible you might have damaged RAM, but it is not likely to occur in several machines in the same time. Recently I had problems with Firefox crashing, segfaulting etc., I did MemTest checks - had to replace faulty RAM. I mention that because the symptoms were similar. –  moon.musick Aug 24 '13 at 17:57
    
I think though that apt verifies checksums by default and it should show that a package is corrupted if it was damaged in transfer. Memory errors are not detected this way though. Also, look here askubuntu.com/questions/296465/… –  moon.musick Aug 24 '13 at 18:17
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