Cutter John wrote:
^ Gotta love lag.
As far as Obsidian goes, I just gave up mining the stuff. If I need it, I'll just build a frame, fill it with lava, and pour a bucket of water over the top.
I found a large underground sea of lava, poured water over all of it, harvested around 150 Obsidian all at once so I don't have to do it all later.