Thanks for Chaeris for alerting me to this. An update for MC 1.2.4 is coming out shortly: Fixed: Fixed godmode exploit (Thanks md_5) Limit framerate on menu screens, no longer uses 100% cpu and make my computer melt Fixed fatal crash for converted worlds to anvil, when there's blocks at max height Fixed an old bug with signs clearing text while you're editing them in SMP Fixed incorrectly swapped en_GB and en_CA language details Fixed crash when logging in while there are blocks at maxheight at spawn Fixed TNT ghosts in multiplayer Fixed storage minecarts dropping enchanted items Fixed crashes on invalid server addresses when joining a server Fixed entities being uninteractable if they existed at login (Multiplayer) Fixed dupe exploit with paintings Fixed furnaces and dispensers dropping enchanted items Fixed the "flickering" of chat as it vanishes off the screen Fixed text rendering over items in the container screens Fixed exploit with jungle saplings (turns other saplings into jungle ones) Fixed launcher opening minecraft dir if the path contains a space Fixed an off-by-one lighting bug Fixed block transmuting (turning one block into another via pistons) Fixed placing mushrooms in daylight, where they can't survive Fixed redstone lamps dropping powered block items when destroyed while on Added: "Back" and "Quit" buttons to OutOfMemoryScreen - http://i.imgur.com/rhhxe.png ??? Made cats more realistic (read: annoying)