Why is my Macbook so slow, loud & hot even after upgrades?

I upgraded my Macbook a bit over a year ago with a Crucial m4 256 gb SSD, plus 8 gb of RAM compared to the old 250 gb hard drive and 2 gb of RAM. The extra RAM was just for some apps and games, and the SSD was supposed to make the computer silent and cool. At first the system improved a lot, from startup times to overall performance, but ever since this summer, and especially this fall after upgrading to Mavericks, the performance has slumped quite drastically (might even be worse than before the upgrades). Also, there seems to be a lot more RAM usage than there used to be, although I hardly ever run more than two applications at once (iTunes and Google Chrome). Is it the processor (2.4 gigahertz Intel Core 2 Duo), the new RAM, the new SSD, or the new OS/other programs?

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Message was edited by: erockdabass
Message was edited by: erockdabass

I have been having the same issue for the last two weeks. No real indication as to why it ever began other than I had turned off my router and Airport Extreme Base Station off for a weekend while I was away from my place.
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My 5 month old MacBook Pro 2.66 GHz Core i7 Airport is sometimes perfect, able to connect, DHCP, and browse without issue. Then, for no reason, I won't be able to join my wireless network, or when I can join, I can't pick up an IP address. And then it will connect, pick up and IP, and then it won't browse. No real rhyme or reason to when this will happen, or when it works.
I thought that it was an issue with my MacBook Pro, but then my sister visited with her brand new MacBook Pro 2.26 Intel Core 2 Duo, and while a month ago she was able to connect, DHCP, and browse without issue, this weekend she had all of the same issues I was having.
My XBOX 360 and MacBook Pro have absolutely no issues with the wired connection. Only my WAN seems to have this issue.
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