no space avail on a folder

I am in F7:

[root@localhost ~]# echo 'foo' >/misc/test
-bash: /misc/test: Permission denied

rw permissioins for root should be ok:
[root@localhost ~]# ls -l /
....
drwxr-xr-x 2 root root 0 2007-10-13 11:11 misc
....

There is 124G available on the root volume:
[root@localhost ~]# df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
135G 3.4G 124G 3% /
But nautilus properties for /misc says: "Free space: 0 bytes" and
[root@localhost ~]# df -h /misc
Filesystem Size Used Avail Use% Mounted on
- 0 0 0 - /misc

Where the system may set: /misc has no space avail?

TV
.