Currently Being ModeratedAug 10, 2012 9:49 PM (in response to HongLJ)
I'm having the same issue. As soon as I upgraded to Mountain Lion, I noticed a significant increase in my startup and shutdown times. People in other forums have suggested reinstalling ML, which I tried to no avail. However, giving that a shot can't hurt; it won't delete any of your settings or information.
Sorry I can't be of more help, but if anyone else can help out, I'd love to hear what you have to say.
Currently Being ModeratedAug 31, 2012 5:32 AM (in response to HongLJ)
I am experiencing the same problem - except my Boot time is over a minute!!! - When I received it I was amazed at the boot time speed in comparison to my old MacBook Pro 17" - I've noticed the machine has become increasingly more sluggish when using certain applications such as Photoshop and RapidWeaver.
Reinstalling Mountain Lion had no real affect in improving the situation - I do have large Aperture Libraries - and use Creative Suite 5 reguarly.
Would be happy for some advice on what maybe the issue. - I am bit dissapointed at this point - Spending that much money on a machine that I bought for the performance boost and now that has slowed right down isn't sitting right with me.
Currently Being ModeratedAug 31, 2012 6:09 AM (in response to edwardfromodessa)
I'm sorry you had a bad machine, i've reinstalled ML too (like how afkeane suggested me to) but to no avail as well. I use photoshop, aperture and blender a lot so i figure it might be those applications that is slowing the computer down but i cannot relate to how these will affect the bootup and shutdown time in any way. I noticed that the bootup and shutdown times varies between usage and there is nothing much i can do to solve it. Maybe you can contact applecare and see what they have to say about this as a new machine shouldn't be like this and with your ridiculous bootup time i'm sure it's more than an excuse to initiate a replacement or at least a repair. Would like to hear from you again about apple's reply on this issue.
Currently Being ModeratedSep 7, 2012 6:42 AM (in response to HongLJ)
I just found a tip on another thread - and it solved my problem instantly!
Quit all applications running - then go to the System Preferencs and choose "Startup" - click on the Macintosh HD and choose restart.
This should solve your issue - It solved mine!
Currently Being ModeratedFeb 25, 2014 11:08 AM (in response to HongLJ)
@edwardfromodessa's suggestion did work for, too. MacBook Pro 15" Retina here.
I was experiencing a 30s delay until the Apple logo was showing up during boot.
Next, I also was experiencing a high frequency beeping sound, exactly until the Apple logo appeared, which was kind of scary. Sounded like some kind of broken transistor. This is gone now, too.