...I stumbled onto this board by accident...
...The ways of jEmplode are inscrutible...

Fortunately, you have stumbled into the right place. Very rarely with consumer products can you chat with the developers / designers / etc. on line and give real feedback / ask questions and sometimes even get answers... Edit: Even if the answers are sometimes slightly biased...

...and occasionally locking up my Karma...

Did you upgrade to the latest firmware on the Karma?