Auto mounting samba windows share in Fedora Core 15
Solution 1:
Better use autofs (automount). http://www.howtoforge.com/accessing_windows_or_samba_shares_using_autofs
Solution 2:
Similar issue as this question.
You'll want to enable the netfs daemon on your Fedora system. This daemon can be used automount/unmount network file services (SMB, CIFS, NFS) defined in the /etc/fstab file.
Use either the ntsysv menu or chkconfig netfs on command to enable it.
This will fix your problem.