@jmo: I have the exact same problem... only in reverse.

When upgrading to OS X 10.5 (from 10.4) we got problems with locking. At first I thought this was a OS X issue, but after upgrading the DSS to 5.0 DB47 build 3216 all of a sudden it worked.

Yesterday I had to take the system down completely to change a 10GbE cable and when it came up again the locking issue was back.

I'll try to do a proper cold-start as soon as I can to see if I can restore the lock-functionality again.

It is a bit scary if the locking feature is random depending on your luck since we have the home directory of both mac's and a bunch of linux workstations mounted from the dss.


-atle