Error while mounting

[beimfohr at dorf.wh.uni-dortmund.de]

I try to mount a remote filesystem with the command

mount -t smbfs //server/share /mnt/share

I get the following error (even at startup by setting the arguments in
/etc/fstab) which is repeated several times:

mount error: Device or resource busy
Please refer to the smbmnt(8) manual page
smbmnt failed: 255
mount.smbfs: ioctl failed, res=-1
Could not umount /mnt/share: Device or resource busy

I don't understand this. smbmount gives the same error. What is the
reason?

Thx,

frx