I noticed in a recent post by Willy that he spelled it "dilemma". I know that I remember being taught to spell it "dilemna". Just a short thread designed to see where everyone else stands in this debate. There is a handy website at www.dilemna.info that does help with discussion. Thank you.
It's probably because of the fact that there are so many words that have a silent 'n' after the 'm' that your brain assumed it would also be an 'n'. (Aka hypercorrection) Eg. Damn, hymn, autumn, condemn
If matters such as there I like to refer to the all mighty autocorrect. Autocorrect knows all. In which case, it's dilemma