Trackpad acting weird after using mouse.

After an extended time using the mouse, my trackpad becomes, in a way, unresponsive.
If I hover the cursor above links, edge of windows or applications in the dock, my cursor stays as the same arrow and the link won't underline and applications on the dock won't show their names.
Also, when I move the mouse while using the trackpad, the cursor snaps back to where it was when using the mouse.
It isn't anything serious, but it's certainly an annoyance.
Thankyou.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

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Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

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Using any sort of Registry Cleaner is strongly advised against. They can (as you have seen) cause issues on your computer ranging from the simple, like this, to major (disabling CD Drives, making computer unbootable), and the "benefits" they claim to provide are very questionable. I strongly recommend that you simply uninstall this and any other Registry cleaners, system optimizers, and use the built in Windows Utilities to speed your computer up (Disk Cleanup, Disk Defragmenter, etc.).
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A few other basic trouble shooting things you can try is this:
Run all Windows Updates, install all needed service packs, etc.
Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. [[Upgrade your graphics drivers to use hardware acceleration and WebGL]]
Update all your plugins (Flash, Java, etc.): [http://www.mozilla.org/plugincheck/ http://www.mozilla.org/plugincheck/].
Download and Install MalwareBytes Anti-Malware, run a full Scan. [http://www.malwarebytes.org/ http://www.malwarebytes.org/]. This helps check that there are no viruses on your computer causing issues. You can uninstall this program after you clean off any infections.

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Hi:
I reported the issue last week. I have no idea what in the world is going on with the support pages.
Right now none of them work!
Anyway, luckily the Spanish support page for your model works (when the general support site comes back up).
You should be able to figure out what driver you need for your USB3 controller...
Enter your model number on the english support site and then change the country at the bottom.
Don't bother trying the Australian or UK english sites because they don't work either.

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Hi BradnBeaverton,
Welcome to the Support Communities!
The article below may be able to help you with this issue.
Whether or not you are using an Apple Cinema Display, the behaviour you are describing is the same:
Apple Cinema Display: Troubleshooting steps
http://support.apple.com/kb/HT2810
Desktop icons move after screen resolution change
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OS X Mountain Lion: About the Display pane of System Preferences
http://support.apple.com/kb/HT5369
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Depth 16
Modes "1280x1024"
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