you could start with installing flash plugin's for many types of embedded audio and video, including

Java plugin: Use the Java plugin to view interactive content on websites

Silverlight plugin: See Use the Silverlight plugin to play audio and video

Windows Media Player plugin: See Play Windows Media files in Firefox with the Windows Media plugin

this may help you solve your problem.

This problem of having to move the mouse is under study: it wasn't reported during testing, but clearly affects some systems in real life. Unfortunately, whatever is the missing link (add-on? software driver? external software) has not yet been discovered.

Because this is caused by a change in Firefox 32, you may want to consider running Firefox 31, but for security reasons, the Extended Support Release version of Firefox 31 (ESR) which is available from the followiung page instead of the old version:

https://www.mozilla.org/firefox/organizations/all/

Related thread: Since the update to v32 pages will not load in my browser without moving my mouse around the screen! I have already reset firefox. This did not fix the issue.

Your System Details shows;

Installed Plug-ins

Mindspark Toolbar Platform Plugin Stub for 32-bit Windows MindSpark Toolbar Platform Plugin Stub for 32-bit Windows

Having more than one version of a program may cause issues.

deactivating duplicate version did not help.

hello psaraf2, there has been a test build created with a speculative fix in it - would you be willing to help and test if the problem is gone with this build? (unfortunately developers are not able to reproduce the issue themselves, so we are dependent on feedback by affected users):

1. first as a precaution, please create a backup of your profile: Back up and restore information in Firefox profiles
2. then download and install this try build of firefox: http://ftp.mozilla.org/pub/mozilla.org/firefox/try-builds/aklotz@mozilla.com-72e7a82b7ca3/try-win32/firefox-35.0a1.en-US.win32.installer.exe
   updated link:ftp://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2014-09-12-03-02-02-mozilla-central/firefox-35.0a1.en-US.win32.installer.exe
3. then please report back, if you can reproduce the problem by using this test build.

thank you!

Turns out that the problem went away when I removed some add-ons and unneeded programs that came with other software. I guess I was hijacked, and that caused the problem. Now things seem to work ok with regard to internet response. I'll have to see about Youtube videos.

I tried Youtube and now it works ok. Whatever I loaded or deleted solved the problem. Thanks for the ideas.

Tried using the 31.2.0 ESR version as you suggested and the pages and videos work great now. No hanging up and no need to touch my mouse. Thank you. Don't know if the rest of this info might help you but here is what I had found with my issue:

I tried disabling other add ons and various other programs I didnt need running, but that never solved the issue. Only the switch to 31.2.0 ESR solved my issue with having to move the mouse to watch videos and view web pages. One thing that did work to stop hang ups on videos and page loading was to open my volume control on the bottom right of my start bar, OR to open the hidden icons box in the same location on that bar. OR open my internet access window that shows all the networks (also in the bottom right of Start toolbar. Not sure why the start bar icons in the bottom right would allow videos to play smoothly again and allow pages to load better? but it did work. Fullscreen mode for videos of course would not work well since you can not see the start bar to open any of the right side icons however.

I switched to Mozilla Firefox from IE and at first didn't have this issue and also use Norton 360. I am wondering if Norton 360 might have started the issue. I cant recall when exactly the problem started, but you might want to try installing Norton 360 on a test machine and see if that is what is causing the hang up issue with the mouse? Not sure if other users that have this problem are using the same antivirus software though. SO I am just guessing since it is the only thing other than newer version of Forefox that I installed when the problems began.

Anyway, thanks for this fix. I can finally stop watching videos while wiggling my mouse or keeping one of my bottom right Start toolbar icons open.