Why do I keep getting "WARNING! Your post was not successful."

[CommonSensePLZ]

[Elad]

1. Please read the rest of the warning message:

This is caused by our server being unable to validate the cookie on
your computer which allows you to post. Common causes for this
are:

1) You have another browser window open, which you either opened
while posting and/or browsed around DU while posting and/or posted
a different message on DU while composing this message.

2) Your browser and/or security software (such as anti-virus, firewall
or anti-spyware) is set to block cookies from DU, or sees cookies
from DU as a "threat" and deletes or quarantines them. Check your settings.

3) Your cookies from DU somehow got corrupted. Try deleting your
DU cookies, closing your browser, and logging back into DU if this
problem persists.

Below is the text of your message.
You will have to start your post all over
again, and copy the text into the new post.

The most common cause is #1.