Having trouble with malformed json?

Having trouble with malformed json?

I am having a problem with php and jquery. My php seems to be malformed. I can't get my login form to work with anything newer than 1.3.2.

I have created a ticket but know body can seem to help: http://dev.jquery.com/ticket/6142

I have changed my php to use double quotes instead of single quotes but I am having a problem with this line:
echo "{\"status\":false, \"message\":' ".$acl->form()." '}"
It works fine for 1.3.2 but not anything newer.

I have tried this but it doesn't work at all:
echo ("{\"status\":false, \"message\":\"".$acl->form()."\"}");

Any help would be appreciated.

Thanks,
Tony