Comment 2 for bug 297758

I think I figured out the problem, even thought I am not totally sure what causing it...

The problem got resolved by adding "username=jmill" in the /etc/fstab file as follows, which was not needed before the upgrade. But somehow, after adding the username to the fstab line, I can now mount the remote share.

//rock/inbox /mnt/rock smbfs username=jmill,rsize=8192,wsize=8192,timeo=14,intr