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For the past year my Macbook has be getting slower, lauder and lags constantly... The lags range from switching spaces to changing a language or even typing an input. It almost never craches, but it does seem like his age is catching up to him...

I have tried formatting it completely already. I bought it with Leopard, and went through Snow Leopard to Lion. It got this way before the Lion installation (which I hoped would help), and now after completely reformatting my into Lion, it took only a few days for it to come back to this condition.

What can I do to make my Mac work right again?

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When did this start - with Lion? How much RAM do you have? Did you try a SMC reset? An SMC reset should be applied if the computer is running unusually slowly although it is not experiencing abnormally high CPU utilization. – gentmatt Dec 15 '11 at 9:59
How much space do you have left on your hard disk? As the disk approaches full things slow down. If the disk is getting full consider replacing it with a bigger one. – Richard Dec 15 '11 at 11:41
Like above, how much free space do you have left? From how you describe it, this could be a failing hard drive. Not a catastrophic failure, but a gradual one. – Bob Martens Dec 15 '11 at 19:41
I know about the harddrive case. Ever since I formatted my Mac I had lots of free space.. I have 2GB RAM. I did not try an SMC reset. And @Matt, as I said above, it started way before Lion... – hizki Dec 16 '11 at 1:18

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