With hal version 0.5.7-1ubuntu18.2 I observed two hald-addon-storage processes per CD-ROM drive.
With hal version 0.5.7-1ubuntu18.3 I observed one hald-addon-storage proccess per CD-ROM drive.
I was also able to insert a CD and have it automounted and Nautilus open with the new version of hal.
Verification was completed successfully -
With hal version 0.5.7-1ubuntu18.2 I observed two hald-addon-storage processes per CD-ROM drive.
With hal version 0.5.7-1ubuntu18.3 I observed one hald-addon-storage proccess per CD-ROM drive.
I was also able to insert a CD and have it automounted and Nautilus open with the new version of hal.