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I've been using Ubuntu 12.04 since it was released last April. (I upgraded to 12.10 in October.)

Suddenly it began running very very poorly, acting as if I was using too much RAM or saturating my CPU. The system monitor and top did not seem to confirm this; I was only using about 30% of my RAM and barely any CPU.

Windows began greying out randomly and frequently and the system completely froze a few times. I figured this was some junk I'd been tinkering with over the year, so I backed up my data and formatted, then re-installed. After booting back up, I saw that the problems persisted.

System info:

  • White box pc
  • Intel Core2 Duo e8400
  • 4GB DDR2 800Mhz
  • Nvidia GeForce 8800 GTS
  • Ubuntu 12.10 64bit

Let me know if you need any further information. Any and all help is appreciated.

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Can you provide the log from commands like dmesg or what /var/log/syslog or kern.log say? – Luis Alvarado Feb 12 '13 at 19:10

Have you tried installing Zram in terminal? Also have you tried installing Preload from the Ubuntu Software centre. I used Preload and that sped up my pc quite well. Well that's all the suggestions I have. Also type in google search "4 things to speed up Ubuntu" Try looking at the video from Nixie Pixel, she does vlogs every week and had a video on how to speed up Ubuntu. Hope this helps good luck! :)

One last thing you might have a bad sector or something on your hard drive, how old is the computer?

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(Posted on behalf of new user @cootje) - zram is intended for use on computers that have low RAM. (512 KB or less), according to this site. So with 4 GB, it shouldn't be necessary. – Aditya Mar 17 '13 at 14:01
sudo add-apt-repository ppa:shnatsel/zram
sudo apt-get update
sudo apt-get install zramswap-enabler


sudo apt-get install preload -y 

Thanks Mike.

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