/var/db/authserver filling up with qdsyncfile

Have a problem where our OD master system drive is filling up, cause is qdsyncfile files in /var/db/authserver,

Mac OS X Server
10.4.11

I have no idea what these are and can find no information on them

-rw-r–r– 1 root wheel 2M Jun 21 13:45 qdsyncfile1277084704.749923–55
-rw-r–r– 1 root wheel 2M Jun 21 13:46 qdsyncfile1277084767.500866–55
-rw-r–r– 1 root wheel 2M Jun 21 13:47 qdsyncfile1277084830.247169–55
-rw-r–r– 1 root wheel 2M Jun 21 13:48 qdsyncfile1277084892.987580–55
-rw-r–r– 1 root wheel 2M Jun 21 13:49 qdsyncfile1277084955.713398–55

Any information to point me in the right direction appreciated