Looks like v2.0.10 was a bit troublesome release. I expect this one to last longer.
* dotlock_use_excl setting's default was accidentally "no" in all v2.0.x releases, instead of "yes" as in v1.1 and v1.2. Changed it back to "yes". - v2.0.10: LDAP support was broken - v2.0.10: dsyncing to remote often hanged (timed out in 15 mins)