Chest/Crafting Table Bug

I was on Minecraft and I noticed something weird. When I tried to move stuff into my chest I had to hold down and I couldn't do it fast at all. And when I went to craft something in Minecraft I tried to hold down and place the blocks but nothing happened and it was really complicated to do. I have Minecraft 1.6 so I don't know if its just a bug/glitch or not. I updated Java but nothing happened it all stayed the same. Does anyone know what the problem is?