Closing bug 1040:
The "quiet" option is quietly (hah) ignored. It should be passed through
to the mount() syscall in the comma separated list of options.
I found the problem with the vfat/msdos filesystems, which uses
a quiet option to override some complaints and errors.
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 027adc5..f8ae1df 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -61,7 +61,7 @@
 
 	USE_FEATURE_MOUNT_FSTAB(
 		{"defaults", 0},
-		{"quiet", 0},
+		/* {"quiet", 0}, - do not filter out, vfat wants to see it */
 		{"noauto", MOUNT_NOAUTO},
 		{"swap", MOUNT_SWAP},
 		USE_DESKTOP({"user",  MOUNT_USERS},)