Firefox is having trouble with flash video.

Question

When I watch flash video (usually Youtube), the video would play normally for a while. But then the picture would look weird and it would be impossible to watch. The only way to fix this is to restart the computer. This doesn't happen when I switch the browser to internet explorer.
Here is a picture of a video under the influence
http://img.photobucket.com/albums/v601/montyalbo123/Capture.png

Answer 1

A twitter widget on my website will not load in firefox but will load in every other browser I've tried. I have tried several versions of firefox. Here is the code I am trying to run:
<code>
new TWTR.Widget({
version: 2,
type: 'profile',
rpp: 5,
interval: 6000,
width: 'auto',
height: 265,
theme: {
shell: {
background: '#333333',
color: '#ffffff'
tweets: {
background: '#000000',
color: '#ffffff',
links: '#4aed05'
features: {
scrollbar: false,
loop: false,
live: true,
hashtags: true,
timestamp: true,
avatars: false,
behavior: 'all'
}).render().setUser('ShawnC4Real').start();
</code>
And the first thing I checked was that scripts were enabled.