I use SSHFS to mount a directory on a remote server. There is a user xxx on client and server. UID and GID are identical on both boxes.
I use 
sshfs -o kernel_cache -o auto_cache -o reconnect -o compression=no \ 
      -o cache_timeout=600 -o ServerAliveInterval=15 \
      
[email protected]:/mnt/content /home/xxx/path_to/content
to mount the directory on the remote server. When I log in as xxx on the client I have no problems. I can cd into /home/xxx/path_to/content.
But when I log in on the client as another user zzz and then
$ ls -l /home/xxx/path_to
I get this
d?????????   ? ?    ?        ?                ? 
content
and on
$ ls -l /home/xxx/path_to/content
I get
ls: cannot access content: Permission denied
When I do
$ ls -l /mnt
on the remote server I get
drwxr-xr-x 6 xxx xxx  4096 2011-07-25 12:51 
content
What am I doing wrong? The permissions seem to be correct to me. Am I wrong?