I feel I've come of age having found my first mob spawner in a dungeon. I've been playing for almost two bsweeks so it felt like it was never going to happen. Armed with diamond sword, iron armour and metal boots, as well as the obligatory bow, I made short work of it, after it had killed me once. There was a waterfall next to it and the passage curved round a big loop to the bottom of the waterfall. I didn't realise this at firstand was jumped from both sides as the spiders came down the fall as well as the corridor. I lost quite a lot of stuff too but came back well armed and dug in from above. I should probably stop playing soon. If I can.