MacBook Pro did not shut down (hang)...

I too am having this problem on my mid-2009 MBP.

I never had the problem w/ Leopard or Snow Leopard. It started after my clean install of Lion.

I don't use Safari, I use Chrome. I don't use KAV, I use Sophos. I don't shut my machine down all that often, I simply close the lid. But when I do restart/shutdown, 9 times out of 10, I get the same grey screen with the spinning wheel that everyone here describes.

I have noticed that the longer my maching goes between boots, the more likely the restart/shutdown will hang. If I restart 5 - 10 minutes after another restart, my MBP restarts fine. If I wait a couple of hours or a couple of days, my MBP is certain to hang during the restart/shutdown.

I'm beginning to wonder if I jumped on the Lion too quickly.

@vea1083:

Thanks for the suggestions, I will do some more testing later today. Please note that yesterday I updated the AdBlock extension within Safari (to v2.4.23), as that extension appeared to be outdated. After that, I surprisingly did not have any more failed shutdowns (so far; for what it's worth). Even after running MS Office and/or Safari for more than 30 minutes. However, I will continue testing to see whether the failed shutdowns will return and, if so, whether running MS Office and/or Safari for more than 30 minutes seems to trigger failed shutdowns.

As far as Kaspersky Anti-Virus is concerned: I'm still discussing this with the Kaspersky technical helpdesk. At first, they stated that the failed shutdown problem is likely to be OS X 10.7 related (although I had mentioned that for me the problem already occurred under OS X 10.6), but they will continue to work on my case based on more background information to be provided by me.

@vea1083:

#@#$%^! I wasn't able to reproduce the problem last night using Chrome, Safari, or Firefox.

I opened up my MBP and Lion was waiting for me so I started out with a fresh restart (which worked surprisingly). After that, I bounced from browser to browser. I closed them, reopened them, installed extensions, removed extensions, bookmarks, etc. Nothing, not a #@#$%^ thing... every restart worked. Maybe it's another app. During my session last night, I only played with the browsers I didn't run any other apps.

This is a strange one.

From @vea1083's link...

"Make sure you've closed all open windows and applications that you may be using. Also, go into System Preferences, General, and remove the check from the box that states: "Restore windows when quitting..." See if that helps.

Also, the first couple of times when shutting Lion down (especially if have open applications or windows) will take longer."

I just unchecked the box myself. I'll post what happens.

I already unchecked the "Restore windows when quitting..." box at an earlier stage, after I had read some postings about problems (not specifically the failed shutdown) possibly related to that functionality.

For me, uninstalling Kaspersky Anti-Virus 2011 for Mac seems to have solved the failed shutdown issue. It may still be too early to be absolutely sure about it, but the last 10 shutdowns (after running MS Office, Safari and other applications; both short and long sessions; no KAV installed) were successful. Now I only have to convince the Kaspersky technical helpdesk that their product is likely to cause failed shutdowns on some Macs...

I haven't had a shutdown/restart hang since unchecking the box. Crossing my fingers this is fixed. 🙂

Experienced the same problem.. with a new MBP and new Lion installed, Happened after i fiddled with some preferences in Kaspersky.. After reading this string, I disabled Kaspersky. At last, my MBP is shutting down like it should. 🙂

Did Kaspersky come with Lion? i did not install it.

According to the Kaspersky website:

"The latest version of Kaspersky Anti-Virus 2011 for Mac, 8.0.6.863, is fully compatible with the Mac OS X 10.7 (Lion) operating system. Kaspersky Anti-Virus 2011 for Mac versions 8.0.4.746 and 8.0.5.812 are compatible with the Mac OS X 10.7 (Lion) operating system only if the "B" or "C" patches are installed."

I don't think they can still claim this compatibility. I've been in constant contact with Kaspersky technical helpdesk, and have informed them in a case about existing threats on the internet re incompatability of KAV 2011 with OS X 10.7 (even with OS X 10.6.x) + my own experiences (failed shutdowns disappeared completely after uninstalling KAV, appeared again after reinstalling KAV, and disappeared again after uninstalling KAV again). At first they seemed not very eager to accept the idea that KAV 2011 may be one of the causes of failed shutdowns, but IMHO they have to accept this by now and do further investigation and fixing.