Hello, what you report is very strange. We did not have anything similar reported. Yes, V3 works fine with Maverick.
Maybe it is some virus protection application running or some disk maintenance application, do you have maybe prosoft engineering disk utility installed, or intego virus barrier?
If you wish, we can take a look into this together, tomorrow I will be available for a remote session most of my daytime, I'm in GMT+2 time zone, same as paris/rome/berlin
Let me know if you are interested.
Rgds
Zsolt