That is way to little physical memory. I would add another 512mb of RAM or even 768mb to bring it up to 1gb. Additional memory is one of the cheapest forms of upgrade to any PC and you will see a huge improvement is processing time.
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Do you know that we're all in line for succession to the throne? Really?
Well, if forty-eight million, two hundred thousand, seven hundred and one people died I'd be Queen.