Comment 4 for bug 661025

I've seen that the same problem was reported on the Debian bugtracker:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=586009

The problem is that mount.cifs appends a trailing slash to the share name in /etc/mtab which differs from the line in /etc/fstab.
Adding the trailing slash in /etc/fstab resolved all my issues:
//share/ ~/mountpoint cifs users,noauto,credentials=~/.credentials,iocharset=utf8,uid=1000,gid=1000 0 0