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Message: <blockquote data-quote="chas_m" data-source="post: 1408990">I think the problem -- and the answer -- are right here. You mentioned it's a 2008 MacBook -- so those fans are now four years old, with four years worth of dust and schmootz on them. They are probably working a lot harder than they should, and aging the processor with that much heat as well.The first thing I'd suggest is taking the machine apart and cleaning the fans. Assuming you are competent to do this (instructions are likely to be found at iFixit), it's like to help matters.Secondly, just as you don't make your 90-year-old grampa run five miles every day even though he could do it when he was 30, maybe it would be a good idea to ease up on the heaviest uses of Flash a bit. I realise it's difficult to avoid, but anywhere you can cut back is likely to extend the useful life of the machine. Maybe there's an alternative to Flash available for some of your uses?</blockquote>