^ 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.
"The way I see it, every life is a pile of good things and bad things. The good things don't always soften the bad things. But vice versa, the bad things don't necessarily spoil the good things or make them unimportant."