Cache poisoning

[James A Griffin]

John Khoon wrote:
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John still send messages in base64 encoding.  Here is the decode:
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Hello.

I would like to ask about cache poisoning.

Does ISC recommand which BIND versions have to be updated for cache 
poisoning?

Is BIND 4 affected by cache posioning?

Actucally, one of my name servers is running BIND 8.2.7, but this 
machine performance is pretty bad, so

I have diffidulty of updating latest BIND version. Which version is good 
for this machine?

Thank you for your time and considerations

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John Khoon