Thanks for the feedback all. I have concluded that the Hard Drive is indeed poked and need to be disposed of.
Seems like Hard Drives can just sometime play up if they want to, and I think its great that Hard Drive manufacturers have increased their quality with the new drives available today.
Still need a backup drive though, and thinking of getting a nice SATA II 250Gb or something with a lot of cache.
@Shadowhunter: Thanks for the advice girl, will definetely have a look at Sisoft Sandra today.
@lectricpharaoh: Considering your advise on my next hard drive purchase. Thanks.