I installed chrome browser and made it my default browser. It worked once then failed to launch from browser icon or menu. I ran chrome from the command line as a user and got the suggestion to chmod 777 /dev/shm. This worked but did not stick between reboots. I added it to the rclocal script. It does fix the problem. Is this a Zenwalk 7 problem or something unreasonable on the part of chrome?

Added this line in your /etc/fstab it fix probably, this problem.

tmpfs /dev/shm tmpfs defaults 0 0

and reboot.