Special characters being replaced with black diamond with a question mark in it

I have just done a bunch of server upgrades and some clients are complaining about characters being replaced with a black diamond with a question mark in it.

After researching character encoding I discovered that one of the upgrades had modified my httpd.conf file and added this line.

[sourcecode]AddDefaultCharset UTF-8[/sourcecode]

Commenting this line out returned the situation to normal.  I am going to write a quick script to check for non UTF-8 encoding and let these clients know that they are using an encoding method that is becoming non standard.

It was an interesting problem.

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