Did you do an upgrade from ML, Lion, or SL? I have a similar setup and I'm planning to upgrade after I get a new HD and Carbon Copy clone my system onto new HD for the purpose of upgrading without risking losing the working system I have, so I'm wondering if you did a fresh install or an upgrade there are more than a few programs I've purchased that I don't want to repurchase.
Also I have the bios from Oct. 2011 when I built the system, so I'm wondering if you upgraded Bios to any of the UEFI and if so how do you go about it. I haven't ever messed with Bios and don't really want to if it isn 'to necessary as my system sleeps well now, but I'm getting ready to use Adobe CC with the system so I need to upgrade and I never have done that. I 'm running SL now and that doesn't work for Adobe CC, but an upgrade to Mavericks changed that, as would an upgrade to Lion or ML and I have bought Lion, but as it took me two weeks to get the system to work the first time around I'm nervous about upgrading especially as when I tried to install Lion I couldn't ' they it to work and I reverted back to an old copy of SL I had backed up.