Its started ever since I got Mo' Creatures. But what it is, is sometimes if i use a large amount of a certain type of block at one time, I'll place another peice of the block down but then it will dissapear and go back into the stack. This is getting really annoying since Im building a house, and I dont know if anyone else has experienced this.
Wow I hate F-ING JEB for making singleplayer have an internal server. Then you actualy somehow get lag in singleplayer. SUCK MY **** JEB YOU F- MUNCH.
Internal server does solve more problems than it creates. Without it we'd get half as many updates, and it would be much harder to make mods compatible with multiplayer. This way they only have to update one version, and the other one works too.