Dodyas:
First, sorry I'm late to the welcome to JU party. But welcome just the same.
Second, I have a never fail very easy fudge recipe at home. I will try to remember to post it tonight--it doesn't involve any boiling (so, I suppose it's not really fudge, but it looks like fudge and tastes like fudge).
I have heard that if you make fudge when it is raining it might not set correctly. Old wives tale? I dunno.