So, this started up yesterday.
I have had the game about a week and have had no problems, other than the occasional crash, the entire time. Until today.
Today I started getting a sticky movement glitch. I will take my finger off a movement key (any direction does this, including jumping) and my character will continue to move in that direction indefinitely until I pause the game. This happens in SSP, I have not attempted SMP yet. I am not sure how to fix this, but it makes it impossible for me to build some structures, as my character will randomly walk over a bridge or into lava or into a deep cave.
Initially, it was not happening often, but now it hapens ever minute or two. How can I fix this?
I have the same Issue it happens every few Seconds now. It really Sucks! It happens in SSP and SMP, it also happens in Creative Mode on both.
I run my own server so trying to build structures for the server takes much longer then it should due to this bug. Its almost to the point where im about to stop playing MC cause im Sick of it :? been happening for 3 Weeks now every 20 - 40 seconds
Sounds a lot like this (from the Known Bugs wiki section):
Pressing a jump, movement, or sneak key at exactly the same time as opening the inventory will cause the action to be held. The inventory may then be closed, and the action will continue until the according key is pressed or the inventory is opened. Multiple keys may be "toggled" in this way. This trick can also be performed by clicking workbenches, furnaces, chests or dispensers.
Sometimes a jump or move key will get jammed and you will keep moving until you press the key that would normally make you jump or move that direction.
It happens to me a lot, and is very annoying and potentially dangerous when it happens. Try to see if you can reproduce it on purpose: move in any direction or jump, and try to either left- or right-click at the exact same time. After a few attempts the move/jump key you pressed will be "jammed" and you will keep moving or jumping until you push that button again, or open a menu or the inventory.
Notch is pretty much the only one who can fix this; if this is indeed your problem, there's nothing you can do except avoid clicking and moving at the same time.