This obviously causes some problems, but have no fear, the solution is quite simple. The multiple quotes issue is caused by magic_quotes, and can be found in the php.ini file, or if you are in a shared environment, the .htaccess file. These variables need to be turned off.

php.ini settings should look like:

—
; Magic quotes for incoming GET/POST/Cookie data.
magic_quotes_gpc = Off

; Magic quotes for runtime-generated data, e.g. data from SQL, from exec(), etc.
magic_quotes_runtime = Off

; Use Sybase-style magic quotes (escape ‘ with ” instead of \’).
magic_quotes_sybase = Off
—

Or if you are using an .htaccess file, your settings should look something like this:

—
# BEGIN WordPress

RewriteEngine On
php_value magic_quotes_gpc 0
php_flag magic_quotes_runtime 0

# END WordPress
—

That is it! The problem isn’t a bug in WordPress but rather a result of having magic_quotes turned on.