Andy, I had a programmer look at the site and he said the following:
I don't think the solution is to just change the connection type. mysql_pconnect()
is OK, as it uses persistent connections, so a separate Mysql connection is not needed to be
created for every page.
From the error on your page "User success_DNPage has already more than 'max_user_connections'
active connections" it looks like that is exactly the problem on your site.
There are not enough available connections, so switching to
mysql_connect() would make matters even worse. The solution here is to
ask your host or your system admin to tweak the Mysql config file, and
especially increase the value for these 2: "max_connections" and
"max_user_connections".
Does this seem correct and do I need to open a support ticket?
Thanks!