I noticed over the last week or so my computer is using a lot of CPU and Memory when nothing is obviously running (even after rebooting).
With only my browser open it's using 20% CPU, 4.0 GB Memory (I have 16 GB) and 2.8 GB cache.
How can I figure out what is wrong? Thanks!
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 12.04.4 LTS