Palm Software slowing web speed on Mac

I recently got a Visor Platinum and, of course, installed the Palm Desktop Software 2.6.1 which came with it.
It all seems to work fine; however, when I get on the web now (using FreePPP as I've always done) the rate slows to a snail's pace. When I uninstalled the Palm software, I was able to achieve my previous speed on the web. Obviously, something does not like something else in my extensions. Has anyone else had this trouble and/or know of a solution? By the way, I have an older mac and am using a serial cradle and am also running MacOs 8.6, but have a 9.1 disk that I've not installed yet because I want to wait until I have the time to deal with the inevitable problesm associated with a newer OS. Thanks.