The 12.10 installer is here if you want to test your theory that something in 12.12 causes it: 12.10 installer is here: Can't download 12.10 again
If you see the same in 12.10 then you know it isn't Opus.
The 12.10 installer is here if you want to test your theory that something in 12.12 causes it: 12.10 installer is here: Can't download 12.10 again
If you see the same in 12.10 then you know it isn't Opus.