Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Systems and Services > OS X > OS X 10.8 Mountain Lion

Thread Tools Search this Thread Display Modes
Old Jan 3, 2013, 07:10 AM   #1
Tin Soldier
macrumors newbie
Join Date: Jan 2013
Question Why is my iMac logging so many system crashes?

I have a late 2011 iMac 2.5GHz Intel Core i5 with 12 GB RAM running OSX 10.8.2. When I type in the command last in OSX's Terminal I get a long list of logins, reboots and shutdowns. However, very many of them - more than half - have the status crash instead of the logout/shutdown time. Thing is, my Mac hasn't crashed even once. My last shutdown earlier today has also been logged as a crash. What gives? Can it safely be ignored?

In the Console->system.log I get the Previous Shutdown Cause alternating between either 0 and 5 (most of them are 0). What do they stand for?

I should mention that I recently got my iMac's logic board replaced (old one just died on me, was covered by Apple care). However I did reformat and reinstall everything after that, so I doubt the logic board is a factor.

Also, I do disconnect the iMac from the mains when it's not in use (as in, I switch off the UPS) due to frequent power cuts (I don't want the UPS beeping in the middle of the night). Could that be causing the PRAM / NVRAM / SMC or whatever to play up and thereby be causing all this? Though it has logged restarts as a crash many times too.

Any ideas about what is going on?
Tin Soldier is offline   0 Reply With Quote

MacRumors Forums > Apple Systems and Services > OS X > OS X 10.8 Mountain Lion

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 08:30 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013,, LLC