It's kinda creepy now... First, an invisible fire block that nearly burned down a jungle, even though I couldn't put it out. Now, a strip of wooden planks spanning across several chunks... It's really starting to freak me out. What is it?
closed as not a real question by SaintWacko, Zero Stack, OrigamiRobot, Beofett, StrixVaria Oct 18 '12 at 20:37
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
Most likely, you are using a different texture pack that: a) Is higher than 16x16 b) Modified
If you are using a higher resolution texture pack without patching Minecraft, blocks can sometimes be invisible, texture may be messed up, and other various things, such as what you mentioned above, occur.