It appears that network changes in Mac OS 10.5.7 could adversely impact some hardware, specifically the Euphonix EuCon line of controllers. Here is information sent to customers today – thanks to reader Oliver Lucas for spotting this.

Please note that the new Mac OS update released yesterday, Version 10.5.7, breaks support for the feature in EuControl that automatically detects what control surfaces are attached to your network.

Euphonix is working on a fix – please DO NOT update your Mac OS until we release a software update that addresses the issue, as your MC Mix/MC Control will not be seen by your Mac.

For those users who have already updated to Version 10.5.7, you can roll back your Mac OS to the previous version if you are using Time Machine.

Update: this is now fixed.

There are no other apparent audio issues with 10.5.7 that I can see. (Visualists may be pleased about some NVIDIA driver improvements.)