My guess - you tried to bring some Drow stuff back from the U/D with you. When a Drow item turns to Adamantine dust it takes up 2 or 3 slots (as opposed to 1 for the original item) in your inventory. Good items are automatically chucked on the floor to make way for the dust. I lost some stuff the same way. Shadowkeeper is your best bet now dude.
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It's bleedin dark down here, slippery too.
Man, that's a pisser.
