browser hangs periodically.

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Hi,

I am having Gateway computer with Windows XP OS. I will mostly use mozilla
browser,but this is occuring even for Internet explorer. Actually whenever I
use the browser after I use for 5 seconds it hangs for 3 secs and then comes
alive. This happens every few seconds periodically. So I went into the task
manager and saw what is process that is causing this. I noticed that,when
ever browser hangs ,the System process(not system idle process) is taking up
cpu by 40% and hence the browser hangs.
This is so frustrating that I am not able to do daily regular work properly.
If some one can help in this regard that would be really nice.

Thanks.


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