Lion Taking longer to shut down?

Same here.

I uninstalled Huawei but it did nothing (20s to shutdown against 2s with SL on a Macbook Pro Mid 2009). Then I saw some spin lock reported by HP software for my printer in the /var/log/system.log. I removed it and I removed any reference to HP in /Library/StartupItems. Now I have an instant shutdown and fast startup. I think you've got to be extremely careful to your system log if you can read it. So Huawei and HP software were the issue for me.

The problem disappeared after removing the Kaspersky Anti-Virus for Mac.

There seems to be a bunch of different applications causing these "ShutdownSTALL" issues.

So far we've identified a bunch of them in this thread.

I now have an intermitent issue with "HP IO Trap Monitor". I removed all the HP Helper-ish applications from my startup. However the HP IO Trap Monitor is still running in the process list, even after rebooting. If I try to shut down the computer it'll hang for up to a minute and if I check the logs this is the application causing the ShutdownSTALL. If I force this process to close then reboot, it's as fast as it was before Lion.

Any ideas on how to prevent this process from opening automatically? I do use HP printers so I don't want to unistall the drivers and apps.

Maybe there's some Automator routine to close a specific process?

for me, removing "HP Tray Monitor" from /Library/Startupitems did the trick.

I had this same issue yesterday right after I installed OS X Lion I noticed that the shutdown time of my MacBook Pro increased from 3 seconds to almost 20 seconds. I was not happy. So I called Apple Suport and the tech guy I spoke with sugested that I reinstall OS X Lion. I didn't agree with his option of resolving the problem since it sounded like he suggested a universal solution without really identifying the cause of the problem. I asked him if he can look for other options. He put me on hold and when he came back he walked me through DELETING THE START UP ITEMS in Safe Boot. I restarted the computer, shut it down and it worked like a charm! 😎

The key phrase in your answer is "right after i installed..." You were right. It was not necessary to reinstall Lion.

All the posts about increased processor usage or slow response immediately after installing are related to Spotlight. Your HDD has to be indexed by Spotlight and this is a notoriously slow process. Once it's done, things will be right back to the usual speed.

So again, relax after installing. Don't panic. Let the Lion do his thing.

Indexing can be the solution but not necessarily. Sometimes, Lion can experience difficulties to stop a process and wait for a timeout. Just launch Terminal and connect as root by 'sudo su -'. Then restart the system and you'll have to wait quite a long before restarting. A root shell process still alive seems to be one of those difficulties. Some drivers or programs are not compatible with Lion shutdown (even startup ?) sequence and need to be removed to solve the problem (on OS X waiting 20 s for every shutdown is a problem). If they are not important for you, get relevant and be happy, otherwise wait for an update.

Indexing is only responsible for increased processor usage (seen in the Activity Monitor as "mds" and "mdworker" processes taking up almost 90% of the processing power), not necesssarily for the shutdown.

You can test it very easily by opening MacintoshHD/Library/Logs/DiagnosticReports and find the most recent *.ShutdownSTALL files. Identify the troubled applications, open the activity monitor and force quit their processes then try to shutdown. You'll see it'll take only a few seconds after you do that.

If the shutdown is indeed back to normal, you'll have to make sure those applications are up-to-date or removed from your system. In my case there were several, but the last one was HP IO Trap Monitor, and I had to manually remove it from MacintoshHD/Library/StartupItems, otherwise it would always run on startup and cause "shutdownSTALL", proven by the log generated in the above mentioned folder.

I agree, you do NOT have to reinstall. And I say this because I did reinstall last Sunday and the results were quite interesting:

Re: Slower startup with Lion

For me removing "HP Tray Monitor" from /Library/Startupitems work perfectly and shutdown in 2 seconds.

I spent ages looking through threads as to why shutdown time went from 2 secs to 20secs, it was due to a hp printer software update. I uninstalled hp printer Package and reconnected printer and installed drivers. All back to normal!

Thank you! Worked for me too. 5 secs maximum 😀

The same problem with Huawei USB modem - deleted startup folders and Lion shutdowns almost instantly on my MacBook air, mid 2011. Thanks!

I'm in the same boat. I got the computer in October, and recently I noticed it's taking a REALLY long time to restart. Like, a minute and a half. I looked in Startupitems in my Library, and that folder's empty, no items in it. I don't want to do a clean install, do I have to? Any other suggestions?