I too have pondered over the same question myself but simply for now anyways choose not to upgrade to Mavericks knowing that everything I have installed on all my macs is compatible and works fine as is
Where as on the other hand if I were to upgrade now would be most likely to find issues inevitably eventuating which has happened previously at a cost having to also upgrade third party software as well as hardware in order to bring back to sync with in the music production side of things anyway being more the wiser this time around,
As others have previously mentioned here this is most likely the cause of most if not all such issues ,
But in saying so though even since such time has well and truly passed think most if not all peoples perception of apple when it now comes to upgrades in OS tend to have perceptions or visions of a grim reminder of what can, does and has happened when such thoughts are revisited from there previous upgrade as an example from iOS 5 to iOS 6 in conjunction to what happened and still continues to be apparent with in there so called maps upgrade which were and still continues to be a total flop in comparison to google maps which ended up saving the day also back then for apple in the end anyways especially in the iPhone department where most if not all were crying out blue murder before google came up with a compatible app of there own to work with in iOS 6,
Which now all seems to be swept under the rug and hopefully diverted on apples behalf which personally is something I feel a lot of people and most likely previous apple consumers won't be so quick to forget
Which seems now written on the wall about apple never being able to live down yet alone come back or recover from completely
As beforehand when the world seemed to potentially then be there oyster.
As well as there devices being then value for your buck rock solid all in one units instead of the current divided sold separately and user non upgradable hardware units of today in comparison for the same price,
But that said am still satisfied with the performance of my system,
And personally think that when it comes to upgrading any OS to not be in such a rush to do so and to allow I would think a good six months at least to allow the OS its self to iron out any of its own bugs and creases for starters and also especially if you have third party devices or software to get up to speed or if not seriously consider such consequences or wether or not one should at all even until the next OS release,
Ultimately Though
What it really comes down to overall is just plain common sense
If its not broken don't fix it
