Quotas now use the filenames aquota.user and aquota.group instead of the older quota.user and quota.group. Linuxconf doesn't seem to be aware of this and gives the following error messages when trying to activate changes:
User quota is enabled for partition LABEL=/, but //quota.user is missing.
Group quota is enabled for partition LABEL=/, but //quota.group is missing.
The above example is for the root ( / ) directory but the messages are repeated for each of the partitions.