[neilxu]

At first, I typed " top -u" in terminal, then downloaded Camino.dmg and then double-click.

After that, I noticed Coreservice consumed 80 to 90% CPU usage. And it kept doing and prevented mounting.

Why coreservice is busy when I mount an image disk?

I "sudo kill" coreservice. It worked, after I killed it, image disk was immediately mounted.

I tried other dmg files. Almost were fine except OmniWeb.

Since I installed Safari v80, the system keeps Camino and OmniWeb from OS X???

[Angus_D]

Tried rebooting? When system processes start randomly going odd (it's called coreservicesd btw), it's normally only temporary.

[neilxu]

Originally posted by Angus_D:
Tried rebooting? When system processes start randomly going odd (it's called coreservicesd btw), it's normally only temporary.

Restart cannot solve this problem. I still believe Safari v80 which changed some system files cause this problem.

[malvolio]

Originally posted by neilxu:
Since I installed Safari v80, the system keeps Camino and OmniWeb from OS X???

Yes. The explanation (and a "cure") can be found in this thread.