Okay, so the cursor randomly moves from the end of the word back one character. Like this for: xamplee
Text looks like this: exampel ad it keepsmessing up th es f you riting)wrotre n
Okay, so that was me not moving the cursor back to the end of the word, it is annoying, and it takes me like 10 minutes to post.
Help!!
I've heard of this problem before. Sometimes what happens is when you type in a form, the cursor jumps out the form and starts "finding as you type".
2 possible solutions:
1) Disable (or Enable) "Find As You Type" in TOOLS > OPTIONS > ADVANCED
2) Create and use a new profile (this is a real pain, but it's most likely to work). You can transfer across all your bookmarks etc, but you would be best to reinstall any extensions you have.
I have the same problem 
You're not using a laptop with a touchpad by any chance?
I've often seen this where part of your hand brushes the touchpad, thus moving the cursor back a little.
I've seen people sticky tape a piece of paper over the touchpad to stop this very annoying problem from happening.
Of course this may not be the problem at all, but if it is, there's your answer.
