Gentoo, etc-update, fstab, oops.

This is mine

# NOTE: If your BOOT partition is ReiserFS, add the notail option to opts.
/dev/ubd/0              /               ext3            defaults                0 0
/dev/ubd/1              none            swap            sw                      0 0

# NOTE: The next line is critical for boot!
none                    /proc           proc            defaults                0 0

# glibc 2.2 and above expects tmpfs to be mounted at /dev/shm for
# POSIX shared memory (shm_open, shm_unlink). 
# (tmpfs is a dynamically expandable/shrinkable ramdisk, and will
#  use almost no memory if not populated with files)
# Adding the following line to /etc/fstab should take care of this:

none                    /dev/shm        tmpfs           defaults                0 0

/etc/mtab lists what you currently have mounted and with what options, which is a good guide to what you should have in /etc/fstab - the dump/pass values are not the ones to use though.

Hopefully you caught it before a reboot, but if you didn't, the second post down on this thread will help:

http://www.linode.com/forums/viewtopic.php?t=1416

That took care of the problem. Thanks.