Shaun - I believe I've figured it out. After installing the OS and ZEN
many times, within a day or two it apeared my server was compromised, I
thought virus? Hacked? Somehow it was becomming corrupt.

...Bash prompt displayed:
I dont have a name;<servername>: no services worked, rebooting sometimes
would only show bash occasionally no prompt.

However after reviewing the BIOs, I found hyperthreading had been turned
on. Once off I formatted and reloaded the OS. Its been 24 hours no sign
of corruption, fingers crossed hopefully that is it, if so I'll install
Zen 7 tomorrow.