Leopard freezing

I installed Leopard onto my Macbook (from Tiger) and now the Leopard system keeps freezing on me (i get a message saying Mac OS X has quit unexpectedly), forcing me to restart by holding down the power button. I never had this problem with Tiger. Anyone know what is the cause of this constant.

Here is another one.
Process: DirectoryService [31]
Path: /usr/sbin/DirectoryService
Identifier: DirectoryService
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [1]
Date/Time: 2007-12-21 10:12:19.051 +0000
OS Version: Mac OS X 10.5.1 (9B18)
Report Version: 6
Exception Type: EXCBADACCESS (SIGSEGV)
Exception Codes: KERNINVALIDADDRESS at 0x00000000b8e4d8c0
Crashed Thread: 7
Thread 0:
0 libSystem.B.dylib 0x93fe28e6 machmsgtrap + 10
1 libSystem.B.dylib 0x93fea0dc mach_msg + 72
2 com.apple.CoreFoundation 0x949d80fe CFRunLoopRunSpecific + 1806
3 com.apple.CoreFoundation 0x949d8d94 CFRunLoopRun + 84
4 DirectoryService 0x00016a8f main + 2583
5 DirectoryService 0x0001605a start + 54
Thread 1:
0 libSystem.B.dylib 0x93fe28e6 machmsgtrap + 10
1 libSystem.B.dylib 0x93fea0dc mach_msg + 72
2 com.apple.CoreFoundation 0x949d80fe CFRunLoopRunSpecific + 1806
3 com.apple.CoreFoundation 0x949d8d94 CFRunLoopRun + 84
4 DirectoryService 0x00022b42 CPluginRunLoopThread::ThreadMain() + 222
5 ...ectoryServiceCore.Framework 0x0015f349 DSCThread::Run() + 39
6 ...ectoryServiceCore.Framework 0x0015f554 DSLThread::_RunWrapper(void*) + 84
7 libSystem.B.dylib 0x94013075 pthreadstart + 321
8 libSystem.B.dylib 0x94012f32 thread_start + 34
Thread 2:
0 libSystem.B.dylib 0x93fe28e6 machmsgtrap + 10
1 libSystem.B.dylib 0x93fea0dc mach_msg + 72
2 libSystem.B.dylib 0x940578fb machmsgserver + 675
3 DirectoryService 0x00022d7b CMigHandlerThread::ThreadMain() + 303
4 ...ectoryServiceCore.Framework 0x0015f349 DSCThread::Run() + 39
5 ...ectoryServiceCore.Framework 0x0015f554 DSLThread::_RunWrapper(void*) + 84
6 libSystem.B.dylib 0x94013075 pthreadstart + 321
7 libSystem.B.dylib 0x94012f32 thread_start + 34
Thread 3:
0 libSystem.B.dylib 0x940128e6 kevent + 10
1 libSystem.B.dylib 0x94013075 pthreadstart + 321
2 libSystem.B.dylib 0x94012f32 thread_start + 34
Thread 4:
0 libSystem.B.dylib 0x94024b45 syscall + 5
1 ...ectoryServiceCore.Framework 0x0015f349 DSCThread::Run() + 39
2 ...ectoryServiceCore.Framework 0x0015f554 DSLThread::_RunWrapper(void*) + 84
3 libSystem.B.dylib 0x94013075 pthreadstart + 321
4 libSystem.B.dylib 0x94012f32 thread_start + 34
Thread 5:
0 libSystem.B.dylib 0x93fe9ace _semwaitsignal + 10
1 libSystem.B.dylib 0x9403a258 pthreadcondtimedwait$UNIX2003 + 72
2 DirectoryService 0x00096a63 sDNSLookup::WaitUntilDone(int) + 179
3 DirectoryService 0x0008854e CCachePlugin::InitiateDNSQuery(sDNSLookup*, bool) + 354
4 DirectoryService 0x0008f980 CCachePlugin::DSgethostbyname_int(char*, char const*, char const*, int, bool, sDNSLookup*, unsigned int*) + 1220
5 DirectoryService 0x00091c48 CCachePlugin::DSgetaddrinfo(kvbuf_t*, int) + 3570
6 DirectoryService 0x000933aa CCachePlugin::ProcessLookupRequest(int, char*, int, int) + 614
7 DirectoryService 0x0000539a CHandlerThread::HandleMessage() + 366
8 DirectoryService 0x00006b05 CHandlerThread::ThreadMain() + 37
9 ...ectoryServiceCore.Framework 0x0015f349 DSCThread::Run() + 39
10 ...ectoryServiceCore.Framework 0x0015f554 DSLThread::_RunWrapper(void*) + 84
11 libSystem.B.dylib 0x94013075 pthreadstart + 321
12 libSystem.B.dylib 0x94012f32 thread_start + 34
Thread 6:
0 libSystem.B.dylib 0x94024a97 sigaltstack + 7
1 libSystem.B.dylib 0x940cab60 simpleesprintf + 41
2 libSystem.B.dylib 0x940caf2d simple_asllog + 599
3 libSystem.B.dylib 0x940c8e53 mallocvprintf + 425
4 libSystem.B.dylib 0x940c8e8b malloc_printf + 35
5 libSystem.B.dylib 0x940c3962 szone_error + 174
6 libSystem.B.dylib 0x93feaac3 tinymalloc_from_freelist + 361
7 libSystem.B.dylib 0x93feb04b szone_calloc + 241
8 libSystem.B.dylib 0x93feaf15 malloczonecalloc + 88
9 libSystem.B.dylib 0x93feaea2 calloc + 62
10 libresolv.9.dylib 0x92abefcf pdns_buildstart + 34
11 libresolv.9.dylib 0x92abf3b1 pdns_convertsc + 27
12 libresolv.9.dylib 0x92ac0f0f checkcache + 537
13 libresolv.9.dylib 0x92ac469b dnslookup_soamin + 135
14 DirectoryService 0x000ccf0a idnadnslookup + 572
15 DirectoryService 0x000882db DoDNSQuery(void*) + 217
16 libSystem.B.dylib 0x94013075 pthreadstart + 321
17 libSystem.B.dylib 0x94012f32 thread_start + 34
Thread 7 Crashed:
0 libSystem.B.dylib 0x93feab65 tinymalloc_from_freelist + 523
1 libSystem.B.dylib 0x93feb04b szone_calloc + 241
2 libSystem.B.dylib 0x93feaf15 malloczonecalloc + 88
3 libSystem.B.dylib 0x93feaea2 calloc + 62
4 libresolv.9.dylib 0x92abef8b pdns_setname + 85
5 libresolv.9.dylib 0x92abeffc pdns_buildstart + 79
6 libresolv.9.dylib 0x92abf3b1 pdns_convertsc + 27
7 libresolv.9.dylib 0x92ac0f0f checkcache + 537
8 libresolv.9.dylib 0x92ac469b dnslookup_soamin + 135
9 DirectoryService 0x000ccf0a idnadnslookup + 572
10 DirectoryService 0x000882db DoDNSQuery(void*) + 217
11 libSystem.B.dylib 0x94013075 pthreadstart + 321
12 libSystem.B.dylib 0x94012f32 thread_start + 34
Thread 7 crashed with X86 Thread State (32-bit):
eax: 0xc008c857 ebx: 0x93fea975 ecx: 0x00006e67 edx: 0xb8e4d8c0
edi: 0x00173000 esi: 0x001730d8 ebp: 0xb031bc08 esp: 0xb031bb90
ss: 0x0000001f efl: 0x00010282 eip: 0x93feab65 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x0000001f gs: 0x00000037
cr2: 0xb8e4d8c0
Binary Images:
0x1000 - 0x109fe7 +DirectoryService ??? (???) <2aa6a70696bda8eb650934b84d2db600> /usr/sbin/DirectoryService
0x158000 - 0x165fe3 com.apple.DirectoryServiceCore.Framework 3.5 (3.5) <8461435d3a5574c799d82d1d718c945d> /System/Library/PrivateFrameworks/DirectoryServiceCore.framework/Versions/A/Dir ectoryServiceCore
0x8fe00000 - 0x8fe2d883 dyld 95.3 (???) <81592e798780564b5d46b988f7ee1a6a> /usr/lib/dyld
0x90014000 - 0x900c6ffb libcrypto.0.9.7.dylib ??? (???) <330b0e48e67faffc8c22dfc069ca7a47> /usr/lib/libcrypto.0.9.7.dylib
0x90160000 - 0x90216fe3 com.apple.CoreServices.OSServices 210.2 (210.2) <4ed69f07fc0f211ab32d1ee96e281fc2> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServi ces.framework/Versions/A/OSServices
0x90291000 - 0x90299fff com.apple.DiskArbitration 2.2 (2.2) <1551b2af557fdf6f368f93e093933852> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x905bf000 - 0x9069efff libobjc.A.dylib ??? (???) <5eda47fec2d0e7853b3506aa1fd2dafa> /usr/lib/libobjc.A.dylib
0x90747000 - 0x90755ffd libz.1.dylib ??? (???) <5ddd8539ae2ebfd8e7cc1c57525385c7> /usr/lib/libz.1.dylib
0x90e54000 - 0x90ed3ff5 com.apple.SearchKit 1.2.0 (1.2.0) <277b460da86bc222785159fe77e2e2ed> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchK it.framework/Versions/A/SearchKit
0x90ed4000 - 0x90f60ff7 com.apple.LaunchServices 284 (284) <0fb50a7a6fd38875f727fc2592a496e4> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchS ervices.framework/Versions/A/LaunchServices
0x90f61000 - 0x90f77fff com.apple.DictionaryServices 1.0.0 (1.0.0) <ad0aa0252e3323d182e17f50defe56fc> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Diction aryServices.framework/Versions/A/DictionaryServices
0x91648000 - 0x918c1fe7 com.apple.Foundation 6.5.1 (677.1) <85ac18c7cd454378db6122bea0c00965> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x91921000 - 0x91921ffa com.apple.CoreServices 32 (32) <2fcc8f3bd5bbfc000b476cad8e6a3dd2> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x91a9e000 - 0x91b15fe3 com.apple.CFNetwork 220 (220) <0ae8fbcbadcb9bd8d673aa4531c0fcfc> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwo rk.framework/Versions/A/CFNetwork
0x91b17000 - 0x91b41fef libauto.dylib ??? (???) <d468bc4a8a69343f1748c293db1b57fb> /usr/lib/libauto.dylib
0x91b50000 - 0x91b57ffe libbsm.dylib ??? (???) <d25c63378a5029648ffd4b4669be31bf> /usr/lib/libbsm.dylib
0x92abe000 - 0x92adcfff libresolv.9.dylib ??? (???) <54e6a08c2f108bdf5916fb483d51961b> /usr/lib/libresolv.9.dylib
0x92b2b000 - 0x92b2cfef libmathCommon.A.dylib ??? (???) /usr/lib/system/libmathCommon.A.dylib
0x92be4000 - 0x92ebdfe7 com.apple.CoreServices.CarbonCore 783 (783) <8370e664eeb25edc98d5c1f5405b06ae> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore
0x92f8d000 - 0x92f9cfff libsasl2.2.dylib ??? (???) <b9e1ca0b6612e280b6cbea6df0eec5f6> /usr/lib/libsasl2.2.dylib
0x92fc5000 - 0x9304cff7 libsqlite3.0.dylib ??? (???) <273efcb717e89c21207c851d7d33fda4> /usr/lib/libsqlite3.0.dylib
0x9304d000 - 0x9312eff7 libxml2.2.dylib ??? (???) <450ec38b57fb46013847cce851001a2f> /usr/lib/libxml2.2.dylib
0x9392a000 - 0x9394efeb libssl.0.9.7.dylib ??? (???) <acee7fc534674498dcac211318aa23e8> /usr/lib/libssl.0.9.7.dylib
0x93ba3000 - 0x93c53fff edu.mit.Kerberos 6.0.11 (6.0.11) <33c25789baedcd70a7e24881775dd9ad> /System/Library/Frameworks/Kerberos.framework/Versions/A/Kerberos
0x93c91000 - 0x93ceeffb libstdc++.6.dylib ??? (???) <04b812dcec670daa8b7d2852ab14be60> /usr/lib/libstdc++.6.dylib
0x93cef000 - 0x93d13fff libxslt.1.dylib ??? (???) <4933ddc7f6618743197aadc85b33b5ab> /usr/lib/libxslt.1.dylib
0x93f4f000 - 0x93f85fff com.apple.SystemConfiguration 1.9.0 (1.9.0) <7919d9588c3b0d556646e555b7193f1f> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfi guration
0x93fe2000 - 0x9413cfe3 libSystem.B.dylib ??? (???) <8ecc83dc0399be3946f7a46e88cf4bbb> /usr/lib/libSystem.B.dylib
0x9486c000 - 0x948f6fff com.apple.framework.IOKit 1.5.1 (???) <5176a7383151a19c962334009fef2c6d> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x94966000 - 0x94a98fe7 com.apple.CoreFoundation 6.5 (476) <8bfebc0dbad6fc33bea0fa00a1b9ec37> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x94a99000 - 0x94aa0fe9 libgcc_s.1.dylib ??? (???) <f53c808e87d1184c0f9df63aef53ce0b> /usr/lib/libgcc_s.1.dylib
0x94db4000 - 0x94de3fe3 com.apple.AE 402 (402) <994ba8e884aefe7bf1fc5987df099e7b> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.fram ework/Versions/A/AE
0x94de4000 - 0x94e28feb com.apple.DirectoryService.PasswordServerFramework 3.0.1 (3.0.1) <e2858f33c02cef9ea4d717b19529059e> /System/Library/PrivateFrameworks/PasswordServer.framework/Versions/A/PasswordS erver
0x94e59000 - 0x94e8bfff com.apple.LDAPFramework 1.4.3 (106) <3a5c9df6032143cd6bc2658a9d328d8e> /System/Library/Frameworks/LDAP.framework/Versions/A/LDAP
0x9537a000 - 0x95543fef com.apple.security 5.0.1 (32736) <8c9eda0fcc1d8a571543025ac900715f> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x958db000 - 0x95a13ff7 libicucore.A.dylib ??? (???) <afcea652ff2ec36885b2c81c57d06d4c> /usr/lib/libicucore.A.dylib
0x96667000 - 0x966acfef com.apple.Metadata 10.5.0 (398) <4fd74fba0062c2e08ec4b1c10b40ff63> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Metadata
0xfffe8000 - 0xfffebfff libobjc.A.dylib ??? (???) /usr/lib/libobjc.A.dylib
0xffff0000 - 0xffff1780 libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib

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Restarting the Mac does not solve the problem.
And then, after restarting InDesign several times, it works fine for the rest of the day.
And bang, the next day it's freezing again.

Hi Steve,
thanks for the hint and the link.
After reading what they say about Leopard Compatibility I presume folks at Adobe are heaving some kind of festivities going on because lots of people will have to upgrade their apps to CS3 level and offer them quite some cash for that matter.
VERY REGRETTABLE. I can't quite believe such basic operations like saving a document are undermined by a new OS. Dear Apple Inc., that's just not fine. And I do believe Adobe upgrades are unnecessarily expensive. Some fix for CS2 level apps wouldn't be asked to much from Adobe, IMHO.
Well, thanks anyway.
Bernd

Leopard freezing at startup

I have a Power Mac G5 1.8GHZ (Single), with installed Leopard a few months back and no issues during or following the install. I also have a MacBook 2GHz Core 2 Duo that I use on a day-to-day basis so the G5 hasn't been used frequently since the Leopard install. When I turned on the G5 last night it started up normally until it reached the start screen for Leopard (Dock loaded, Background loaded, task bar at the top loaded). At this point it became unresponsive. I could move the cursor around but the pinwheel was spinning and I could not click on anything.
I have tried waiting to see if it is just a slow load, restarting the computer, resetting the PRAM, resetting the SMU, reinstalling Leopard. I've also tried, unsuccessfully, to boot from the Tech Tool Deluxe CD however it just opens the OS like normal and freezes, and booting in safe mode. When starting up in safe mode it asks for the login information then unceremoniously freezes.
Any help would be greatly appreciated, Thanks.

it looks like you were doing an erase and install. FYI, during the installation at the screen where you choose the destination disk there is an "Options" button. clicking on it gives you a choice of an install type. did you go through setup assistant after finishing the install? if you have it was definitely an erase and install. in that case the problem must be caused by hardware. let's check if this is your hard drive. boot from the install DVD and as soon as you are past the language screen go to the Utilities menu at the top and start disk utility. run repair disk on your hard drive.

Leopard Freezes on Restart

I'm having a Leopard installation problem I haven't seen discussed, so here goes.
Installation appears to go as it should (taking about an hour).
I get a screen saying installation was successful and a count-down to restart.
I click restart.
GRAY screen with Apple appears, and the little circular animated icon goes around and around for a minute or so.
Then freezes.
A two hour wait with a frozen animation produces nothing new.
I've forced a restart with the same result, several times.
Restart while holding down "c" DID get me back to the Leopard install screen, but a second attempted install failed in the same way.
I've seen a suggestion to try "archive and install". I've NOT tried that yet. Will try now and report results.
Since this is not a Blue Screen, I don't think this is the same problem others have had. I do not have Application Enhancer installed on this machine (at least not where other posts have expected it to be.)
If anyone has a fix to this I'd appreciate it. If I find one for myself I'll of course post that here as well.
This is on a MacBook Pro 15 inch, purchased new in August. 2G ram. Plenty of disk space free.
Sigh.
Charles

Thanks very much to chat2ian and Nicolas those were helpful responses.
Here is what seems to have solved my problem:
Force a shutdown from the frozen restart screen by holding down the power button.
Power back up while holding down the letter "c" to force boot from the cd/dvd drive.
Chose the option to "archive and install", rather than the default "update".
After a (lengthy) installation, the installer says it is done and ready to restart.
Click restart.
Hold breath, cross fingers, appeal to appropriate godesses.
After about 30 seconds of gray screen, solid blue screen with cursor appears.
(Think: Great-- progress is a blue screen of death. But wait!)
After a frightening pause, a color wheel appears, and hope returns!
Leopard starts, configuration help runs, and (in my case a least) 5 more packages are ultimately updated, followed by another restart.
This is also a bit of tense drama, but runs about as usual (perhaps a shade slower than Tiger.)
So far, all files and software are present, and life begins to look worth living again.
Nicolas: Sorry I didn't see your reply until after I'd started the "archive and install" run, so didn't get to see if Command-V would show me the same stopping point that you got.
chat2ian: I was within another try of adopting your approach and reverting to Tiger. I started this "simple" update at 9.45 and it is now 20.37.
The irony is I bought the MacBook Pro in August because I wasn't willing to go through another MS upgrade to Vista. I honestly thought this would go smoothly the first time. Silly me.
Thank you both for trying to help.
Charles

IChat 4.0 on leopard freezes after about 5 seconds

I have a 24'' iMac and my wife has a 13'' macbook. We both have the most updated version of leopard on our computers. The problem is that whenever we try to do a video chat with each other, my video freezes up after about 5 seconds, and hers keeps going. We both have set our bandwidth limit to none in ichat and the streaming speed in System prefs> Quicktime to 1.5 Mbps. Anyone know what else could cause this? Thanks

A "Crash" of an application is a Specific thing where you get an Error message saying it "Unexpectantly Quit" and a Log in the relevant Crash Error logs in Console. The marker underneath the app in the DOCK would also disappear.
An App that Freezes or part of the display of it Freezes would not normally be considered as to have Crashed.
Having said that I have had a repeatable issue where a Tester with me could definitely Crash my iChat. Sure enough each time he tried to call my iChat Unexpectantly Quit.
It turned out it was a faulty router at his end.
The Video freezing is normally a Bandwidth Issue (the 363k is fast enough tht this should not happen based on those speeds or the ones you tested)
It can be down to how busy the Processor is with on-line Widgets like Weather and Clock and others. or Background apps and Utilities
The way to see those is to open the Activity Monitor.
7:35 PM Thursday; February 14, 2008

Snow Leopard Freezes

I have:
Mac OS X
version 10.5.8
Processor 2.1 GHz Intel Core 2 Duo
Memory 1 GB 667 MHz DDR2 SDRAM
I am trying to install Snow Leopard from a disk I received from Apple. It gets to about 15 percent installed and then goes to the blue Apple screen with the bar clock and freezes up overnight. Please help.
I would like to eventually get to Lion. I understand I need at least 2 GB of Ram. I saw directions online to do this myself. Is this something I should tackle? If I upgrade should I do 2 GB or 4 GB?
Any other advice?
Thank you.

If you didn't add any hardware or software, it likely means the Snow Leopard either wasn't retail, or there is a hardware issue with the computer. If the hardware test detects none, and it is a retail release, then your suspect is likely the RAM*:
http://www.macmaps.com/badram.html
- * Links to my pages may give me compensation.

Snow Leopard freezes over time

I've been using Snow Leopard (upgraded from leopard) for 2 days now. One thing I discovered is that, when I'm working on a few applications ( like Adium, Firefox, Pages, and etc. ) , the app which I'm working on started to freeze. When this happen, what ever window I click from then on will freeze too ( this includes finder as well because I'm trying to force quit applications ).

If you have not run Disk Utility and used +Repair Disk Permissions+ since upgrading to Snow Leopard, you may want to do that as a first step.
Then, to further isolate your problem, create a new admin user account in System Preferences Accounts pane.
http://docs.info.apple.com/article.html?path=Mac/10.5/en/8235.html
Log out and log in to the new account. You will be using default user preference settings and only standard processes will be running in the background (unless you installed third-party software that runs at the system level). Try whatever causes the problem in the new account, and note if it recurs.
I have done this for the several minor issues I ran into, and in the new post-upgrade account, there was never a problem. Then, I did some more detailed trouble-shooting in my pre-SL user account to figure out what was causing the problem (usually a preference file that I had to trash).

The Leopard FREEZE!

I have Leopard running on two machines: a Mac Pro and a G5. On both machines (but especially the G5), if left to sleep for a period of time (less than an hour) it freezes up completely.
Just ran to the store and when I came back the Mac Pro had frozen also. Totally freeze up, not even a mouse arrow moving. When this happens I have to use the power button to restart.
Anything I can do? Maybe some small app that keeps the processor busy during sleep?

Double trouble huh?
Get your restore disks out. Check both disks for errors.
Restart your Mac(s) while holding down the C key, pressing the power button and inserting your restore disk all at the same time. An Installer window will open, but do not proceed with any installations. Instead, from the Menu Bar, select Utilities > Disk Utility. In the Disk Utility window click First Aid, and then click Verify. If Disk Utility reports errors, click Repair. When Disk Utility is finished, from the Menu Bar, select Utilities/Startup Disk. Select MacintoshHD 10.x.x and click Restart.
*"On both machines (but especially the G5"* Try resetting the Power Management Unit. For the G5 first.
Reset SMU on G5
Reset PRAM and NVRAM
For the MacBookPro:
Reset SMC on MacBookPro
Reset PRAM on MacBookPro
Try Leopard Cache Cleaner available here:
http://www.apple.com/downloads/macosx/systemdiskutilities/leopardcachecleaner.html
Are you syncing the MBPro with the G5 using File Sharing, or an iDisk?
Carolyn

Snow Leopard Freezing showing GPU Debug in Console

I recently updated my iMac from Leopard to Snow Leopard and it began to freeze. I have reset PRAM, SMC, fixed the fonts and looked for anything suspicious in the console. When it freezes there is no obvious crash. It freezes in Safari, Finder and even in Console. The mouse moves, but I cannot do anything. Last freeze shows the time machine icon in mid spin. Console reports npvhash=4095 then GPU Debug info start and hundreds of lines of information. I had this happen on an older machine and the video card was failing.
There is so much chatter about this being related to Snow Leopard, I am wondering if I upgrade to Lion it will all go away?!?
How can I tell if indeed the video card is bad? It is out of warranty and I would like to do as much trouble shooting on my own as I can before, I take it in.
We did not see quite the same behavior in Leopard. Just endless beachball spinning and a few forced restarts. I figured a good clean out of caches, etc would solve the problem along with an OS update.
Thanks for any help and advice in advance,
Debbie

singerdf wrote:
I need to know more about what Safe Mode suggests when things no longer freeze there. I understand only apple stuff is on and only the minimal amount.
This is what Safe Mode is.
In particular what let your computer run normally in this situation is that many of the kernel extensions (aka drivers) are not loaded.
That also means that your Mac is not running at its best performances.
The good news is that at least runs.
I don't know how much this can help in determine the culprit, but have you run Apple Hardware Test?
The first Mac OS X Install Disc that came with your iMac, also contains the Apple diagnostic.
Insert the disc. Turn on the computer, and press D until the diags starts. Follow the on screen instructions to run the tests.
A brief note before ending this post.
Yesterday evening I was watching a streaming video in Google Chrome. When I installed Lion, I purposely didn't install Adobe Flash Player. So I use Google Chrome that has Flash Player incorporated inside the program itself to display internet sites with Flash contents.
After about twenty minutes the screen freezed. The mouse cursor turned into the "spinning beachball of death". The audio continued to play normally.
The /var/log/kernel.log file, uncovered the usual bunch of lines relating to the GPU
Dec 7 21:22:27 rfc-1918 kernel[0]: ** Device in slot: SLOT--1 **
Dec 7 21:22:27 rfc-1918 kernel[0]: ** GPU Debug Info Start **
Dec 7 21:22:27 rfc-1918 kernel[0]: 0x000094c8
Dec 7 21:22:27 rfc-1918 kernel[0]: 0x000000d6
Dec 7 21:22:27 rfc-1918 kernel[0]: 0x00000001
Dec 7 21:22:27 rfc-1918 kernel[0]: 0x00000018
Dec 7 21:22:46 rfc-1918 kernel[0]: 0x00000000
Dec 7 21:22:46 rfc-1918 kernel[0]: 0xc0016900
Dec 7 21:22:46 rfc-1918 kernel[0]: 0x0000008f
Dec 7 21:22:46 rfc-1918 kernel[0]: ** GPU Debug Info End **
About your question, "What I am going to do".
Well. As I wrote, this issue is not so frequent in my case. Also I planned to buy a new iMac next year around march.
But I sincerely hope next Lion update (10.7.3) could patch this misbehaver.

Leopard freezing

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