Apache ssl speed slow on CentOS box

Usually there's always something that seems to 'break' a system. Tinkering or tweaking or an unexpected update.

Basically the LAMP web server at an office (CentOS 5.4) has started running Apache SSL connections really slowly. It seems that outside they are bit laggy but inside the office (on the same subnet) it is very slow taking sometimes 10-20 seconds just to load a page.
We have 2x DNS servers on that site (under Active Directory) that the clients are connected to but I'm unsure if that would affect the delays we face.

I've since (just in case) updated the kernel, etc on that box to see if it'd help. The mail server (similar setup) seems to be okay however. Only I have admin access to the server with an issue and the ONLY work done on it outside access to the web interfaces is me doing some PHP programming..

Any support would be great.
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kiwistagAsked:
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kiwistagAuthor Commented:
Partial resolution and it may work for others (not sure why)...
Some of the new rpmnew php.ini's show memory_limit set at 128M instead of the stock standard 24M

As soon as I raised it from 24 to just 32M it sped away quite quickly.

I'll give it a few days to see what eventuates...

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Pieter JordaanSenior Systems Administrator - Web hosting and Network Security.Commented:
There seem to be a problem with the CentOS 5.5 and Ubuntu 9 kernel.
I had the same problem on Ubuntu 9, but it was resolved with an upgrade to ubuntu 10

See this post:
http://www.experts-exchange.com/Software/Server_Software/Web_Servers/Apache/Q_26379814.html

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kiwistagAuthor Commented:
I just upgraded MySQL from 5.0.3 to 5.1.x and PHP, etc and it seems to help in 'some' connections. There must be an underlying issue somewhere but what it could be escapes me :(
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