No, I am sorry, this is my first OS X installation so I didn't think it was relevant... If there weren't several mentions about BIOS version in this topic, I would never figured it out.
Now, there are just some minor issues I couldn't solve so far. I noticed you have e6500 too, so maybe you could help me.
1) Did you manage to get sleep working? I tried sleepenabler and set hibernatemode to 0, but didn't suceed.
2) Some animations are very slow. The worst are probably notifications (blinking and slow) and top pages in Safari. Also the scrollbar in safari is blinking when scrolling -- but scrollbars in other applications are OK. Other animations are fine, it's weird.
3) Is there anything I should know before upgrading to 10.8.4? -- I don't want to break it again