Can you do a "df" to find out what your actual space is on the root filesystem?
Also, try this script. Not mine but it is very good!
At the prompt type:
command SIZE filesystem
bigfiles 10000 / #for root filesystem
$ cat bigfiles
# To find any file over a certain size in a given directory
# Primarily used to locate files which might be running a filesystem out of
# space.
#
# First parameter is the filesystem or directory to begin the search from
# Second parameter is the size of the file, in characters, to find
if [ $# -eq 2 ]
then
if [ -d $1 ]
then
#ls -l `find "${1}" -xdev -size +"${2}"c -print`
find "${1}" -xdev -size +"${2}"c -print > /tmp/crslist$$
if [ -s /tmp/crslist$$ ]
then
ls -l `cat /tmp/crslist$$`
else
echo "apparently no files that large in "${1}
exit
fi
else
echo "$1 is not a directory...try again"
exit
fi
else
echo "\n\nbigfiles requires 2 parameters..."
echo "\tthe first is the beginning directory"
echo "\tthe second is the size of the file to search for\n\n"
fi