[alpaca128]

The first time you start a program on Mac OS it'll contact an Apple server to see if it's known malware or something like that. So it doesn't happen the first time after boot but the first time you ever run the program after installation or compilation.

[oriolid]

Thanks for the explanation. I thought code signing was supposed to reduce the need for this kind of checks. Still, stuff like this isn't helping with performance and if the new binary is sent somewhere outside the developer machine legal departments would be interested too.