Reboot into the new kernel, the grub menu should let you select kernel, and the new one should be the default choice. (You can run "uname -r" to verify which kernel you are currently using). Then see if you get the same crash or error messages when you run /usr/lib/xscreensaver/pipes.
Reboot into the new kernel, the grub menu should let you select kernel, and the new one should be the default choice. (You can run "uname -r" to verify which kernel you are currently using). Then see if you get the same crash or error messages when you run /usr/lib/ xscreensaver/ pipes.