AD Management Agent gets stuck and runs until transaction log fills

Hello,

I'm experiencing an odd problem with our FIM ADMA when running a delta import delta sync profile. The MA starts to run, imports a few accounts, then seems to get stuck. It will sit at the same number forever, making no progress. It will continue to run until the transaction log fills the disk, at which point it crashes. When examining its activity with the SQL Profiler, it appears to be stuck in a loop, operating on the same objects over and over. It constantly executes the following statements for each user (there are a few thousand users its doing this to, in alphabetical order): 

declare @p8 uniqueidentifier
set @p8='0EFEDF29-AF99-E811-8144-005056A453F9'
declare @p9 int
set @p9=NULL
exec mms_addcslinkbyanchororrdn @objid='7C63436F-E44E-4DD2-A95C-0C41F6CD1EF1',@attr=N'member',@rstate=2,@anchor=NULL,@rdn=N'CN=someuser',@pobjid='8D6C3B01-AE99-E811-8144-005056A453F9',@guidMA='2A1D6392-379A-4E47-ADEC-D592C04C671A',@targetid=@p8 output,@foundByAnchor=@p9 output
select @p8, @p9

Does anyone have any ideas on why this is happening?