I'm running a Macbook Pro 6,2, and I need to find a new Linux distro to dual-boot with it.

I'm currently using Ubuntu 12.04 on it, but it has heat issues, and some memory leak with the drivers and/or X that causes it to crash after being used to long (especially when doing graphics intensive work).

(See here for details regarding that)

Some requirements:

It needs to support Macbook architecture (or at least be capable of supporting it with some tweaking).

I attempted to install both Arch and Fedora earlier this year with little success, because the LiveCD installers were confused upon encountering my hard drive, and were unable to complete the installation.

Today I tried MacPup (build off Puppy), which I really liked, but it didn't recognize my Wi-Fi (not a huge deal, because I believe I can use ndiswrapper and the driver that OS X provides to Bootcamp), and is unable to see the partition I want to install it on my hard drive.

For the past couple months, I've been using an old desktop computer for development and SSHing to it from OS X (due to the desktop stability of Ubuntu), so I get the benefit of Linux without the stability issues I was having. I can't do this anymore, because the computer's hard drive went out (it lasted a strong ten years, though).

I was also doing web development, and ideally the distro I use would support Apache, so I can test websites out.

Things I like:

Lightweight

Low energy consumption (I'll be coding with it mostly, so fancy desktops and such are not interesting to me, and I'll probably install E17 and/or AWM, anyway)

Good package management system

Running from RAM, (as much as is possible, anyway -- MacPup/Puppy really won me over with the idea of running lightweight from RAM).

I know most of this seems a little contradictory, since I'm asking for fringe hardware support and a lightweight distro, but it doesn't have to have these things out of the box, as long as I can install them (even Ubuntu didn't have support for my fans out of the box, which made for a race against the clock in installing, but at least it was doable).