Sorry to hear this Morgen. We have not changed anything. In order for us to be able to help you, we need to know exactly what you're doing.
When you say copy and paste,where are you copying from and pasting to?
Your browser should not have any affect, the site is designed to work with them all.
We've not had any other reports of problems other than with the preview on the forum due to a php problem on the server.
It may be easier for you to contact Joe by email if the site is being slow.
He can then try and help you.