Lightroom 4 Macbook Pro 13
Processor 2.4 GHz Intel Core i5
Memory 4 GB 1333 MHz DDR3
Someone mentioned this processor could run hot? IDK I have used multiple cooling fan systems - nothing cuts it. I just do not understand why Lightroom bogs it down so much so.
I would upgrade the RAM. Your MacBook should run Lightroom just fine.
I agree, 8G ram minimum. You're probably swapping memory pages to disk now which is a huge performance killer. If you need more performance after that an SSD would help.
I've had a few MacBook Pros (temporarily from employers) and own a MacBook 13" (non-Pro). The Pro's got hot on the bottom when under load. The MacBook can get warm too, but it's not as bad with its slow Core-2-Duo CPU (which will run Lightroom, albeit slowly).