The computer was making noises, and very careful feeling and listening with a half deaf ear proclaimed a hard drive was about to die. What an excuse!
So for AUD48, another 80 GByte hard drive was purchased and installed. The noise persisted!
Removed all the hard drives and still the noise was there, and this time I could positively identify it as the power supply unit. The label on the side say "Low noise design", and besides, there was sufficient dust caked on it to provide the most efficient noise protection, both label and dust were all to no avail, so guess I should have bought a power supply instead.
A lot of cleaning up and it's a bit quieter, but I am wary.
Stuck Kubuntu on the new hard drive. So so, after a few days went back to the Ubuntu disk.
The back up system I have made worked, I was able to transfer all that important data between distros without any hassle. A friend loaned a Super Grub disk which allowed be get back into the old caddy(using caddies is not recommended for live OSs). I am told RIP does the same job, and it is now up to Ver 2.9
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You might also find this article useful: How to oil a computer fan. I've had a lot of problems with noisy power supply fans in the past, and it's not until I read that article that I actually realised where the noise comes from.
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