This release fixes a bug caused by the 1.6.0 release. Not everyone will be affected by the bug, but everyone should upgrade regardless.
If you find you’re having trouble with DNS for your domains on the InterWorx server after the 1.6.0 release, manually upgrading to this bug fix release may fix the problem.
To upgrade, login to NodeWorx, and click the “Updates” menu item. Then from the drop down menu select “InterWorx Updates”. Then click the “Refresh” button, and finally click the “Install” button.
A few minutes after the update is complete, your DNS issues should be resolved.
(See 1.6.0 release information here)