Depending on the rpm it is installed it might be in /usr/libexec/. What you are looking for is gam_server. Now as root rename the file if it is the location mentioned here.
mv /usr/libexec/gam_server /usr/libexec/gam_server-disable
Now you need to kill the running gam_server. Use the command ' ps -aux | grep gam '. The proscess ID is the second number in the output. First one is the users ID. Since it is started per user you yourself should be able to kill it as a user using the following command.
kill -9 process_id
Brian
Distribution: RHEL 5.1 with Pieces of this and that.
Kernel 2.6.23.9, KDE 3.5.8 and KDE 4.0 beta, Plus Development src.rpm, ATI fglrx64_7_1_0-8.433-1 rpm with 3D and DRI working.
Acer 5100-5840 with webcam, ati, sdcard reader, sound, atheros based wireless, all working. Only thing not working is the memory stick reader.