been running mavericks for a week now on my laptop. No problems with PS CC, LR 5.2, epson 11880, 4900, 9900. Other than a minor glitch with Capture one which hasnít repeated, seems to be running fine.
Installed it on my main machine a couple of days ago. No issues there either.
I do always clone my boot drive over to a backup which I can boot from or even restore from, so really not taking much of a chance when I test new OSís.