Typing cursor jumps back to original position after clicking elsewhere

Question

Hello!
My Macbook Air, since Day 1, has had the annoying issue described in the post subject. I'll be working on a document in iWork, (although this behavior pops up in every application) and I'll fix a typo or something in the body of the text. I'll then click back to the end of the document to continue typing. Then, when I start typing, the cursor jumps back to the typo that I fixed, with all my typing going in the wrong place. It happens a lot and it's maddening. I'm past my 90 days for phone support, so I'm hoping somebody here has run into the same issue.
And speaking of the 90 day issue... If I'm covered for a year, but can't talk to anyone for months 4-12, how on earth would I set up a warranty repair? Note, I'm nowhere near an apple store.

Answer 1

And speaking of the 90 day issue... If I'm covered for a year, but can't talk to anyone for months 4-12, how on earth would I set up a warranty repair? Note, I'm nowhere near an apple store.
You can always take your computer to a AASP, to locate one near you navigate to:
https://selfsolve.apple.com/GetWarranty.do
You can do an SMC reset to see if that helps. Also if you purchase AppleCare this will extend the warranty and telephone support to 3 years from the original date of purchase. I would recommend you look into it. You can buy AppleCare directly from Apple or if you do some shopping you can save by buying from Apple resellers like Amazon or LA Computer Company.
_SMC RESET_
• Shut down the computer.
• Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
• On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
• Release all the keys and the power button at the same time.
• Press the power button to turn on the computer.  
_PRAM RESET_
• Shut down the computer.
• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step
• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
• Hold the keys down until the computer restarts and you hear the startup sound for the second time.
• Release the keys.
Roger