System slow and certain web pages load slowly

For six month's I have been trying to determine what is wrong.
Back ground os: Maverick 10.9.4.
I think I may have found the trouble.
When I shut down the computer, a box opens and ask's
to continue the download or abort?
So, I always abort.
I have done all the maintenance and permissions and reset
the Pram and Sms. (I think that's it?)
The last time I posted a tecky had me download EtreCheck software.
And I was able to find a lot of bad or damaged files.
I ran it today and under, Top Processes by C.P.U.: ( In red) was
100% installer.
I can not tell which or what installer?
And how to find this?
My whole system is slow or unresponsive and web pages
sometime's do not load.
I hope someone can help me.
Thank you,
John

Found the culprit. ( WOOHOO ! )
I went into the library and under logs,
found a file called: com.apple.Tcc and
it had a red icon on the bottom.
So I re- ran EtreCheck and it was gone.
By maintenance, I mean, Permissions.
I hope this solved the problem?
Thank you to all for your assistance.
If this does not solve it I will be back.
John

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HT1338 Why is safarai loading certain web pages so slowly?

Why is safari loading certain web pages so slowly?

Emptied the Safari cache lately?
Press Command + Option + E then quit and relaunch Safari to test.
If that doesn't help, try this DNS.
Open System Preferences > Network > Advanced > DNS
Click + and type:
208.67.222.222
Click + again and do the same.
208.67.220.220
Click OK.
Quit and relaunch Safari to test.

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Doesn't seem to matter if I use Safari v5.1.10, Firefox v29.0.1, or Chrome v34.0.1847.131.
Problem started about a week ago mostly with YouTube but now I have issues with almost all web pages loading slowly, including this one.

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Certain web pages load a blank white screen

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This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
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After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
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Adding DNS codes to your Network Settings, should gives good results in terms of speed-up:
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208.67.222.222
208.67.220.220
(An explanation of why that is both safe and a good idea can be read here: http://www.labnol.org/internet/tools/opendsn-what-is-opendns-why-required-2/2587 / )
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I was able to figure out a solution.
CAUSE:
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System slow and certain web pages load slowly

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