email library hangs if no newline set

[eluser]jmadsen[/eluser]
After banging my head for 20min, I finally tracked the "hanging email send()" down to not having:

$this->ci->email->set_newline("\r\n");

in my library.

I tested with an example straight from the user guide examples; anyone run into this before, and can explain the issue to me?

Guide doesn't show that this is required in anyway (unless I've overlooked)