Anaconda crashes on upgrade of existing system while it is parsing the existing
/etc/fstab to mount the various partitions.

I will attach the complete saved bug info, but here are some useful excerpts:

Traceback (innermost last):
  File "/usr/bin/anaconda", line 630, in ?
    intf.run(id, dispatch, configFileData)
  File "/usr/src/build/84820-i386/install//usr/lib/anaconda/text.py", line 427,
in run
  File "/usr/src/build/84820-i386/install//usr/lib/anaconda/dispatch.py", line
144, in gotoNext
  File "/usr/src/build/84820-i386/install//usr/lib/anaconda/dispatch.py", line
209, in moveStep
  File "/usr/src/build/84820-i386/install//usr/lib/anaconda/upgrade.py", line
223, in upgradeMountFilesystems
  File "/usr/src/build/84820-i386/install//usr/lib/anaconda/upgrade.py", line
65, in mountRootPartition
  File "/usr/src/build/84820-i386/install//usr/lib/anaconda/fsset.py", line
1551, in readFstab
IndexError: list assignment index out of range

Local variables in innermost frame:
loopIndex: {}
diskset: <partitioning.DiskSet instance at 82c2848>
line: karazm:/helium/var/mail /var/spool/mail

The complete fstab:

LABEL=/                 /                       ext3    defaults        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
LABEL=/cache            /cache                  ext3    defaults        1 2
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /proc                   proc    defaults        0 0
none                    /dev/shm                tmpfs   defaults        0 0
LABEL=/tmp              /tmp                    ext3    defaults        1 2
LABEL=/usr              /usr                    ext3    defaults        1 2
LABEL=/var              /var                    ext3    defaults        1 2
/dev/hde3               swap                    swap    defaults        0 0
karazm:/helium/var/mail /var/spool/mail         nfs rw,hard,intr,noac