Been workin great on my MBPro-Early2011, upgraded in-place from Mountain Lion 10.8.5.
Haven't experienced any deal-breakers at all; even with the Mail app.
Thought being an IT person, I'm very eager for the .1 fixes to come out, just for peace of mind if anything.
With all the new features, and lighter system resource footprint, I wouldn't downgrade from Mavericks for anything tho.
EDIT: I do have an issue where Virtualbox leaves a ghosted instance (on the dock, and Force Quit won't work), but this obviously is Virtualbox's issue to fix, not Mavericks.
Haven't experienced any deal-breakers at all; even with the Mail app.
Thought being an IT person, I'm very eager for the .1 fixes to come out, just for peace of mind if anything.
With all the new features, and lighter system resource footprint, I wouldn't downgrade from Mavericks for anything tho.
EDIT: I do have an issue where Virtualbox leaves a ghosted instance (on the dock, and Force Quit won't work), but this obviously is Virtualbox's issue to fix, not Mavericks.
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