If your YouTube is slow, stuck or weird, and people tell you
to either change or install stuff, DON'T TOUCH A THING.
You shouldn't have to mess with java scripts, flash players,
firewall settings, anti-virus utilities, activeX controls, pop-up
blockers, browsers or registries. And stay away from stupid
add-ons and downloaders that Y!A people are trying to sell.
None of those things will help you, because your computer
and YouTube were working perfectly fine at one point, right?
The first rule of thumb and best option should ALWAYS be:
don't disable, erase, uninstall, separate, switch, download,
alter, install, add or change anything. Doing those will only
make matters worse for you.
Every day, YouTube often shuts down many of their servers
in order to update stuff. Be patient if your YouTube is slow,
stuck or garbled. Transmissions from YouTube's computers
to you are actually done in small chunks of Flash at a time.
That's why sometimes you may only get bits and pieces of
either video, text, a blank screen and/or the spinning circle.
Your problem may fix itself in a few hours or by the next day.
If your YouTube continues to behave slow, stuck or strange,
clear your "cache" of all "temporary internet files", "cookies"
and "history". Things should run much smoother afterwards.
If you're not sure how to do this, or if you want extra tips on
how to make YouTube run even faster (all without having to
buy or install anything), then click my avatar and email me.
I will guide you through "cache" clearing plus my other tips
in easy English with full explanations.
Note 1: if you have Google Web Accelerator (or something
similar to it), dump it, burn it, trash it, disable it, uninstall it
-- do all that you can to get as far away from it as possible
(even though this contradicts my advice). Clicking on "Don't
Accelerate this Website" will not help you whatsoever.
Note 2: longer videos require both Flash AND Sshockwave
in order to play smooth. Other than those, stay away from
any sales pitches that people on Y!A are shilling, because
their answers often have absolutely nothing to do with your
question, and their wares may actually make your problem
worse. Besides, what kind of answer is:...[my paraphrase]
"Although you cannot watch or access videos properly, get
this downloader."
Note 3: an unusual fix that once worked for me was altering
the URL "www . youtube . com" to simply "youtube . com",
(or you can even try "ca . youtube . com").