Just got home from Best Buy and didn't even look at the box. This iMac is not preloaded with Mavericks--it's still rocking 10.8.4. Does that matter? I noticed a discussion thread on apple support where people kept returning to get Mavericks preloaded. Why? Does it matter? I checked the WiFi hardware and it includes /ac, so I assume I have the latest and greatest hardware, just need to update the software. But that's a bit weird considering this came out in October. Thanks in advance, and apologies if this has be re-hashed already. Just wanted to make sure it wasn't an issue.