Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Hi,
upgraded my 2009 iMac from 10.6.8 without any issues - runs smoothly, maybe a little bit faster :apple:
 
I've tried SL upgrade to Mv
I've tried ML upgrade to Mv
I've also tried clean install of Mv

No unusual anomalies out of these upgrade paths.

The only thing I gain from SL to Mv upgrade is that Intel-coded apps that still carries a PowerPC-based installers (in my case Starry Night Pro, and an obsolete Epson scanning software) get ported over to Mavericks without issue.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.