sshfs-bug?

[Varox]

Hi all!
When I try to mount a directory with sshfs, I get asked for the password and don't get any errormessages (the module fuse is loaded). But then, when I do "cd mounted_directory" and try to list something with ls, I get this errormessage:
ls: .: No such file or directory
I couldn't find anything at google, so I hope you guys can help me! (I am not a native speaker, so please don't pay attention to my writingmistakes!)
Thanks for your help!
Varox