Well, my final note about this, *sigh*... Whatever the issue is/was, it was in the mirc.ini file from my working setup. During testing, like a moron, I moved when I thought I was copying my working copy of mirc.ini. There's something in the mIRC code that freezes hard if something is amiss in the mirc.ini though, I just can't reproduce it now *sigh*

Cheers,
GregMo