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I want to install Lubuntu on a Pentium IV Desktop with 1GB RAM and I am currently trying it on Live-mode from a pendrive, just to be sure this won't give me trouble after proper installation to HDD, why is CPU usage permanently at 100% in task manager, even when in idle state? The system is not running slowly, so I don't understand why is this happening.

top - 15:30:56 up 17 min,  8 users,  load average: 1,10, 1,20, 0,87
Tasks: 125 total,   1 running, 124 sleeping,   0 stopped,   0 zombie
%Cpu(s): 10,3 us,  4,5 sy,  0,0 ni,  3,3 id, 81,9 wa,  0,0 hi,  0,0 si,  0,0 st
KiB Mem:   1018100 total,   909352 used,   108748 free,   106504 buffers
KiB Swap:        0 total,        0 used,        0 free,   501836 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND           
 1882 root      20   0 80656  11m 7028 S   6,1  1,2   0:22.74 Xorg              
 3460 lubuntu   20   0  172m  12m 9580 S   6,1  1,3   0:00.31 lxterminal        
 3512 lubuntu   20   0  5452 1280  972 R   6,1  0,1   0:00.01 top               
    1 root      20   0  3632 1996 1276 S   0,0  0,2   0:00.80 init              
    2 root      20   0     0    0    0 S   0,0  0,0   0:00.00 kthreadd          
    3 root      20   0     0    0    0 S   0,0  0,0   0:01.10 ksoftirqd/0       
    6 root      rt   0     0    0    0 S   0,0  0,0   0:00.00 migration/0       
    7 root      rt   0     0    0    0 S   0,0  0,0   0:00.21 watchdog/0     
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The Task Manager itself is a CPU intensive application. It doesn't look like the CPU usage is too high without it running. –  mikewhatever Nov 30 '12 at 16:03
    
possible duplicate of Lubuntu 12.10 cpu usage sticks at 100% –  Stephen Myall Dec 4 '12 at 21:24

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