Sorry, too many clients already

Hi,
I'm having touble increasing of the number of client connections to my database. I've tried two different ways :

1. Start w/ postgresql start -i -N 64 -B 128
2.Use configure -with-maxbackends=128

I still can only connect to exactly 32 clients. I'm using postgresql-7.0.2. and jdbc 7.0-1.1 on Red Hat Linux 6.2

Thanks for any help ....

Bill Howell