Minecraft Username: devilkid73

Brief Description: there is a major glitch in my town where i place a locked sign on a block and the block and sign can still be broken. it only happens in certian areas though
Instructions:
place a sign and lock it then have someone else come along and break the block.

How many times did you recreate this bug?: It is not constant now but if i log off and back in it does it and i have to relock the signs
Result: the ability to break other peoples locks

Expected Result: it shouldnt beable to be done but it is and it has cuased me a to have a large theft take place