Seus espaços devem ser substituídos por 0
no fstab
para que pareça:
//10.0.0.23/Documents home/alex/Network0Shares/Documents cifs credentials=/home/alex/.smbcredentials,uid=user,gid=group 0 0
//10.0.0.23/Family0Pictures /home/alex/Network0Shares/Family0Pictures cifs credentials=/home/alex/.smbcredentials,uid=user,gid=group 0 0
//10.0.0.23/Scripts /home/alex/Network0Shares/Scripts cifs credentials=/home/alex/.smbcredentials,uid=user,gid=group 0 0
//10.0.0.23/Shared /home/alex/Network0Shares/Shared cifs credentials=/home/alex/.smbcredentials,uid=user,gid=group 0 0
//10.0.0.23/Torrents /home/alex/Network0Shares/Torrents cifs credentials=/home/alex/.smbcredentials,uid=user,gid=group 0 0
Veja: