Well my ext3 didn't automount either :-)
This is how I make it.
Usual disclaimers, if this doesn't make sense to you, you probably shouldn't be trying it ...

add these 4 lines to the bottom of /usr/sbin/mmc-mount
if [ $? -ne 0 ]
then
mount -o $3,noatime,nodiratime "$1" "$2" > /dev/null
fi