I bought a MacBook Pro with 2 GB of RAM a year ago. It's a MacBook Pro 4.1 with a 2,4 GHz CPU (Penryn) and the memory is 667 MHz even if the bus is 800 MHz (I know the difference and why it's like that). I've tried buying some RAM, as I see in the "Understanding Intel Mac RAM" guide (here), choosing Kingston ValueRAM wasn't a good idea, now I know, but... reading the guide I see that my computer DOES accept 4 GB, but going to Apple's support page (here) I see THIS: "Although these notebooks will accept up to a 2 GB SO-DIMM in each of the two memory slots, the MacBook Pro will only support 3 GB total memory. If you want to maximize the amount of SDRAM in your computer, install a 2 GB SO-DIMM in one slot and a 1GB SO-DIMM in the other." Is this true? Is there a workaround? Is it better that I just upgrade to 3 GB then? Thanks in advance for your input.