[fdkz]

One example: when the usb cable is yanked under macosx while a serial port is open, 50% of the time macosx crashes, and sometimes the crash occurs randomly up to 2 hours later.

[X-Istence]

That's because the Mac OS X FTDI drivers that FTDI provides are absofuckinglutely terrible. Don't install them, use libusb from userspace...

[duskwuff]

Or use the less-buggy FTDI drivers that are provided by Apple in Mac OS X 10.9. The vendor drivers are no longer needed.

[X-Istence]

Did not know that Apple provided drivers, finally! I haven't played with an FTDI in a while!