[sshfs] fusermount failed even after adding a user to fuse group

[Hui F. <hf...@cs...>]

Hi, guys;

sshfs always failed on my debian for any "user" user, even after
I added my user to "fuse" group.
Here is my screen log, in which I have chown/chmod every possible file.

1. user "hfeng" is in fuse group.
  $ id
  uid=1000(hfeng) gid=100(users) groups=24(cdrom),   
  25(floppy),29(audio),44(video),100(users),105(fuse),1000(hfeng)

2. check "fuse" module
  $ lsmod | grep fuse
  fuse                   33100  2

3. check /usr/bin/fusermount & /dev/fuse
  $ ls /usr/bin/fusermount -l
  -rwxr-xr-x 1 hfeng fuse 18400 2006-06-14 08:55 /usr/bin/fusermount*

  $ ls /dev/fuse -l
  crwxrwxrwx 1 hfeng fuse 10, 229 2006-06-27 17:03 /dev/fuse


3. And now, after all these, I still got only a failed message.
I really don't know what else I can do to fix it.

  $ sshfs hfeng@poisson:/home/hfeng/ poisson/ -o sshfs_sync
  fusermount: mount failed: Operation not permitted


Thanks, all.