What video driver is Xorg using?  If you are using VESA or some other 
generic driver you will see that happen.

Troy wrote:
> I'm running Ubuntu 7.10 on a HP Pavilion ze4125 laptop (AMD Athlon XP 
> 1600+ [1.4Ghz] with 1 gig of RAM.  However, I've experienced the issues 
> described below with other versions of Ubuntu, and other distributions. 
> 
> Current symptoms:
> Mouse will jerk when moving - moves fine for awhile, then all of a 
> sudden quickly stops for a brief second.
> CPU usage showing 100% spikes frequently, and I'm only running Top in 
> Terminal, Firefox, and System Monitor
> CPU temperature ranges from 40c-60c.  Is this normal?
> Fan on laptop running 99% of the time.
> Overall slow response.
> 
> I originally thought I may have a HDD issue, but numerous diagnostic 
> utilities state HDD is fine.  I now wonder if my CPU is the culprit.  I 
> searched the repositories for a diagnostic utility, but did not see 
> any.  Can anyone recommend a diagnostic utility for Linux?  Any other 
> ideas as what might be the issue?
> 
> Here is what the first few lines in Top show
> 
> top - 13:35:25 up  1:21,  3 users,  load average: 0.44, 0.49, 0.78
> Tasks: 102 total,   5 running,  97 sleeping,   0 stopped,   0 zombie
> Cpu(s): 31.6%us,  5.3%sy ,  0.0%ni, 63.2%id,  0.0%wa,  0.0%hi,  0.0%si,  
> 0.0%st
> Mem:   1002092k total,   526172k used,   475920k free,    16712k buffers
> Swap:   489972k total,        0k used,   489972k free,   310824k cached
> 
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  
> COMMAND                                                        
>  6592 troy      15   0 17888  10m 7432 R 21.2  1.0   0:02.72 
> metacity                                                       
>  6525 root      16   0  105m  19m 7548 R 15.9  2.0   0:33.10 
> Xorg                                                           
>  6783 troy      15   0  210m  70m  22m R  5.3  7.2   2:46.20 
> firefox-bin                                                    
>     1 root      18   0  2952 1856  532 S  0.0  0.2   0:01.30 
> init                   
> 
> 
> 
> Thanks,
> 
> Troy
> 
> -- 
> Website of the week:
> http://www.ubuntu.com/
> 
> The Free Alternative to M$ Office:
> http://www.openoffice.org
> 
> My Blog:
> http://troythetechguy.blogspot.com
> 
> 
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