When updating the MacOS, bugs are usually a part of the ordeal. After upgrading to 10.6.8, 9to5Mac readers have had printers connected via their networks drop, optical audio out stop working, and some Parallels bugs. Never fear, there are fixes for all of these problems:

Network printers

Per some of the previous suggestions, the problem is with some broken files in /usr/libexec/cups/backend

Simply restore the following files in the backend folder from either the 10.6.6 or 10.6.7 versions:

socket, dnssd, lpd, ipp

Once you’ve done this, you have to re-set the Printing System, and also run ‘fix permissions’ using the Disk Utility.

Optical Audio out

  • Go to the /Macintosh HD/System/Library/Extensions/ folder.
  • Invoke Time Machine and migrate back to a time before you installed OS X 10.6.8.
  • Select the “AppleHDA.kext” file in the Time Machine backup.
  • Restore the file, replacing the one in your current folder.

More at Cnet..

Parallels issued an update this afternoon which fixes bugs which popped up for 10.6.8

If these fixes didn’t work try joining the thread, or seeing if one of our great readers can help you out in the comments.

Thanks, John and John!