Keep a samba share mounted in Fedora 11?

I have a samba share mounted on my system that seems works at first, but if there is no access to it for a couple of days, the share will disappear. I manually mount the share like so:

/sbin/mount.cifs //127.0.0.1/MP3\‘s /mnt/ro_mp3/ -o user=Username

In my samba log, I get the following message (presumably when the share disconnects):

__ffff_127.0.0.1 (::ffff:127.0.0.1) closed connection to service MP3’s

To the question: How can I keep this share from unmounting?