Troubles Working with Disk Quotas

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Running several servers with OpenBSD 2.8 and the Generic kernel.
Trying to use disk quotas for users and groups. The steps I took where:

1) Added userquota and groupquota to fstab for /usr
2) edquota test and set hard block limit of 15
3) quotaon -a

Now output from quota -v test (a new user with no files):
Disk quotas for user test (uid 1003):
Filesystem blocks quota limit grace files quota limit
grace
/usr 0 10 15 0 0 0

Then su'd to test and ran
dd if=/dev/zero of=delet_this_file bs=1k count=20k
to write a 20k file. Worked fine.

Ran quota -v test with the 20k file and came up with
Disk quotas for user test (uid 1003):
Filesystem blocks quota limit grace files quota limit
grace
/usr 0 10 15 0 0 0

Why isn't the quotas seeing the blocks in use?

CB