samba - May 2001 - smbfs: can't access some directories on a mounted win2000 share

hi

i've mounted with

mount -t smbfs -o guest //gerlinde/c /mnt/samba

a share from a win 2000 pc
if i try do access some directories (for example i want do list them
with "ls" or try to copy them or try to access on any other way the
content of these directories)
i get following error message:

smb_proc_readdir_long: name=\Programme\*, result=-13, rcls=1, err=5

and it doesn't show me the content of the directory after this error
("Programme" is the directory i tried do list)
some directories i can access without anyproblems... some not...
but i can't see any relation beetwen the directories i can't access
or between these i can access
the directories doesn't content a lot of files,  or files with special long
file names, or large files...

i tried to mount a share from a win98 pc but didn't get this or any
error at all...
(i didn't try to mount a share from an other win 2000 pc yet)

i use samba 2.2.0 with mandrake 8.0 and kernel 2.4.3

anybody got an idea what the problem is??
thx

Ronney