Weird Cursor/Freezing Problem

Bizarre Issue. After using my Mac for about 10 minutes, my cursor pulls one of these:
http://i52.tinypic.com/2uohuop.png
(Artist's rendition)
And my computer completely freezes. I've tried safe-booting, re-starting, and everything else on this list (Including resetting to factory settings) http://support.apple.com/kb/TS2570
And it keeps happening (Unless I'm in safe mode, but that doesn't do me any good, because I want to go online). Help?

I would also try troubleshooting the RAM. Shut down. Disconnect power adapter and remove battery. If the RAM you have installed is not the RAM provided by Apple, remove that RAM and install the Apple-supplied RAM. If you don't have the Apple-supplied RAM, or you already have the Apple-supplied RAM installed, remove one module, try booting, move that module to the other slot, try booting, repeat with other module.
If neither RAM module works in either slot, then there are almost certainly other hardware issues (usually the logic board, which covers a plethora of possibilities; unfortunately, the fix for almost any LB issue is to replace the entire LB), as the odds of both RAM modules and/or both slots being faulty are extremely low (but possible).
If no luck there, then it's back to this, unless someone else has ideas:
If you've completely erased your HD and installed a new OS (and nothing else) . . . then there isn't much to do but bring it into a repair shop. I'd start with a free "genius" bar appointment.

Similar Messages

Another weird Icebook cursor-freeze problem

I recently asked about a full cursor-lockup problem here:
http://discussions.apple.com/thread.jspa?threadID=440688
Problems started after updating this machine to OS 10.3.9.
Anyway, I've been able to improve matters to when the cursor freezes, I can
unlock it by unplugging the phone line to the (internal) modem. Only locks up when I'm online (dialup). Weird, huh? And down to nuisance level, though I'd still like to cure it.
Details: 2002 Icebook G3/600 running OS 10.3.9
Ran fsck, repaired permissions, cleaned & reseated RAM (tests
OK with Memtest)
Any other ideas?
TIA & Cheers -- Pete Tillman
"There is no known substitute for scrith."
--Dr. John Stockton, rass
Icebook Mac OS X (10.3.9) 384 MB RAM

I've had that problem since I purchased my MacBook about 2 years ago. I've even flatten and installed new OSs over this time, no change. The behavior I have is the cursor sticking after just about any input which requires the computer to do some processing (ie: copying and pasting text, performing edits a photo, renaming a folder, etc...). It's very distracting when you're working hard on a document or drawing and constantly waiting for the cursor to unstick. Believe it or not, I've actually gotten used to it. Good news is, I'm buying a MacBook Pro soon, and giving this computer to my wife. I'll freak if the new Pros do it too. No......!
--Robb

G570 USB mouse cursor freezing constantly

The problem will be explained lower but let me tell you how this was.
So I've had this problem like 1,5 years ago, after I bought the laptop. So I bought a cheap mouse for it back then, and I noticed that the laptop had problems with the USB mouse, fine, I thought it was the poor mouse, so I bought another cheap one, and it worked fine. Then I bought a gamepad, and again, this problem.
Today I bought a gaming mouse, and the problem re-appeared. I've been searching through the internet all day long.
Basically, the mouse cursor freezes constantly, also with that "plugged-unplugged" sound, but the touchpad works.
I've been looking all around, tried the mouse on another laptop and it works fine.
I've tried:
- Starting the laptop in safe mode.
- Uninstalling/reinstalling the realtek USB reader or w/e its name is.
- The device manager trick (I think you know what I'm talking about)
- Been changing the OS many times after I bought the laptop, that problem persisted with the gamepad.
- Tried different ports around the laptop.
None of them helped. BUT, I saw that actually it hangs when the CPU is throttling. I've changed my power plan to energy saver and the problem went away. I've changed the maximum/minimum CPU power, the problem went away.
But the frequency sets constantly at 800 MHz. What can I do to keep it at 2200 MHz (i3-2330M clock speed) and also keep the mouse working well?

Hey Barrett_killz,
Welcome to the forums
I would suggest you trying out a different USB mouse and see if that helps
Cant suggest anything else as you have already uninstalled and installed the Drivers
keep me posted
Lets make 2015 the year of the #DO
Did I or someone help you today? Press the star on the left to thank them with a Kudo!

10.6.8 cursor freeze

Hi,
I clean installed a family member's Macbook Pro 3,1 with 10.6.8 and noticed the cursor will frequently freeze for between 5 to 30 seconds. The cursor freeze was evident prior to installing any 3rd party apps and does not seem to effect any other process happening at the same time. Trashing a file, ejecting a mounted drive or performing a Spotlight search (and some other random tasks) will result in the cursor temporarily not responding to trackpad movement. No information has been written to the logs to suggest a process error. I have reapplied the combo 10.6.8, repaired permissions and also checked the SMART status of the internal HD. Has anyone else noticed this after installing 10.6.8? Thanks

I have the same problem, and it's very annoying ! It doesn't happen with a "Logitech" Mouse, only with my "Bluestork".
I have to unplug and replug the USB dongle to unfreeze it. This problem isn't due to my session, it also happen on a new 10.6 installation on another hard drive. It happens as I connect it on a USB hub or directly to a computer's USB port.
http://appletoolbox.com/2010/04/mac-os-x-10-6-3-mousekeyboard-freezes-continue-m ore-fixes/
I have done every step described in this link (except installing 10.6.2) but none solved my problem.
I don't know what to do,
Akari.

2011 Mac Mini, 10.8.3, SSD - System CPU at constant 10%, frequent 0.5 sec cursor freezes

Hi. I have a Mid-2011 Mac Mini with 8GB of RAM. I have an SSD installed in it as the primary drive, along with another internal 2TB drive and an external USB 2TB drive for media. This machine is mostly used as a media server and player. It's been running Mountain Lion since I bought it (refurb) last year. I upgraded to 10.8.3 as soon as that came out, and was running for a while without any problems. This evening, though, I started to notice some problems.
The main issue is that the CPU (well, one core) seems to be constantly under load. Under Activity Monitor I'm watching the system load (but not user load) hover between about 8% and 12%, all of the time. But looking at the program list, I don't see anything taking up more than about 2% of CPU, and that is taken up by Activity Monitor itself.
The annoying way that this manifests itself in the UI is that if I'm just randomly moving the cursor around in a circle, I can watch it periodically hang and freeze for about half of a second every 3-4 seconds or so. Meanwhile, everything else on the system also seems to freeze up for about half a second at the same time, which makes watching Netflix extremely irritating. (With Netflix the sound plays as normal, but the video freezes briefly every few seconds - I verified this in both Firefox and Chrome so I doubt it's a browser thing.)
I've already tried some troubleshooting steps myself. (None of this has worked yet.)
I saw a lot of messages in console about "mdworker deny mach-lookup com.apple.ls.boxd", which googling around for led me to this page; per the instructions there I booted into safe mode, waited a bit and rebooted, and now I don't see those messages any more. (I didn't mess with the sandbox.sb file, about which, really? Apple implemented this in Scheme or something?) Just to be on the safe side, though, I disabled Spotlight indexing with sudo mdutil -a -i off.
I opened Disk Util and ran a verify on all three disks, no errors. I found one or two permissions that needed repairing on the startup SSD and repaired them. The problem persisted. I also cleared out my caches with Maintenance while I was at it.
As a side note, even when I rebooted in safe mode, I was still seeing the same behavior (periodic half-second mouse freezes, system CPU averaging a constant 10% or so in Activity Monitor).
I also spent some time reading this other thread which looked like it had some very useful advice (unlike that poster, though, my Spotlight processes aren't crashing). So I went ahead and followed Linc Davis's first set of instructions in that thread. Here's what I've got for steps 1 and 2.
1. Activity monitor
Highest-CPU process is Activity Monitor at about 1-2% CPU
CPU: User 1%, system ~10%, idle ~90%
System memory: Page outs 0, swap used 0 bytes
Disk activity: Reads in/sec 0, Writes out/sec 0 (these infrequently spike up to about 40 or 50 max)
2. System log
I put up a gist for this here. It's my last 50 messages or so, probably some are coming from the most recent reboot. I can see the "IOHIDSystem cursor update overdue. Resending" messages which I presume are linked to my cursor freezes, but nothing else looks obviously suspicious to me. The stuff about "menucracker" is down to MenuMeters; I uninstalled it and rebooted at one point just to check, but it didn't seem to make a difference so I reinstalled it.
As far as kexts go, the only one I had that wasn't Apple was SoundFlower. I actually need that one, I use it to stream files from Plex, but I went ahead and uninstalled it anyways, and it didn't make a difference. My launchd lists start up sickbeard, sabnzbd, and plex, but I've manually quit all of those and the problem persists, so I highly douby any of them are to blame.
Any advice greatly appreciated. Is there a better way that I can see what exactly is causing the high system CPU load, like can I list processes by number of kernel calls or something? I did try top and ps but I didn't see anything obviously different from Activity Monitor in their output.

Nope, I don't have a "/Users/charon/Library/Mobile Documents" directory, let alone anything underneath it. Is that like an iCloud thing or something? I tend to avoid the Apple-supplied services when I can (I don't use iTunes either unless I can help it).
As an update, as of about two days later this problem seems to have solved itself. Possibly sleeping and waking did something to it (though that seems unlikely given how many times I rebooted), or else there was just some long-*** kernel process that finally worked itself out. But my system CPU is back down to normal and the cursor freezes are gone.
??? it is a mystery! ???

New condition baffling mouse cursor freezes if I put it on a flat surface even with ac plugged in

Hi all
I am now really stumped. Here is the situation
ac adaptor plugged in mouse freezes
UNTIL I plug in WIRED and working lan cable.
if I unplug the lan cable from the router the mouse cursor freezes.
NOW that would be strange enough BUT if I unplug the LAN cable the mouse freezes again as expected UNTIL I lift up the S10 ( doesn't matter how I do it) the mouse starts to work again!!!! with the ac plugged in. So now you are all thinking it's the ac socket !!! nope thought about that and it's got nothing to do with it. The mouse freezes the moment I put the computer down on a flat surface or even near it.
It's as if the bloody thing is effected by proximity to a mass ? anyone got any ideas

Hi majorkong,
Additional ideas are possible shorts internal to the system. I definitely have a reason to believe that the unit has a hardware problem. This is either through the touchpad, touchpad cable, or on the motherboard.
As I see here you have already communicated with us before. Here is your previous thread with us.
Have a good night.
Don

Continued Freezing Problems - Please help!

Hello everybody.
A few months ago I picked up a used G5 iMac. It has a 1.8 Ghz PowerPC processor, 2 GB RAM, a superdrive and a 20" display.
After 6 weeks ago, I started having problems with programs crashing and the screen shaking. After getting some poor advice that my software was to blame, I reinstalled my operating system. The computer was running OS X 10.4.4 at the time and when I reinstalled I installed 10.3.5 which the computer quickly upgraded to 10.3.9. This caused a few other odd problems like the system profiler not opening from the "About this Mac" window.
After some research I correctly diagnosed that I was having this problem: http://www.apple.com/support/imac/repairextensionprogram/
I took the computer down to the local Apple store for the repairs. After about two weeks one of the techs at the Apple store called me back and told me that the original problem had been fixed, but now there was another problem.
According to the tech when testing the hard drive they were getting a read/write error. He told me that this was due to either corrupted software or a failing hard drive.
I did not have a warranty on the mac as it was about two years old, I didn't have the money to pay for the continued repairs, and frankly I couldn't rule out that the techs at the store hadn't caused the problems themselves when they removed the hard drive for testing.
So I took the computer home. The computer booted up properly but the cursor would often freeze, the fan would spin hard and I would need to hold down the power button to reboot the machine. The system profiler still would not open and my USB devices were often not showing up. In some circumstances it would freeze every time - for example just after scanning an image in Photoshop.
So to test whether I was having a hardware or software problem I used an external hard drive to clone my existing hard drive and booted from that. I scanned an image in Photoshop, started editing it, and viola, it crashed.
So I set my hard drive to zero, and reinstalled the operating system from scratch.
During the second install disk I had a cursor-freezing crash. I used the power button to reboot the machine again, and the install picked up where it left off. It finished with no further problems.
The machine works better now than it has - system profiler opens properly and some other odd problems have been fixed. USB devices work much better. But the cursor still freezes occasionally, especially in Photoshop. I'd say it was Photoshop that was unstable, except that the freezing also happens occasionally when it hasn't been open at all. Other new strange behavior has cropped up as well - like the icons for iTunes and Safari keep switching in the dock.
I've tried so much - I even ran a virus check because if this was a Windows machine I would almost certainly think I had a virus. This is awful - I am a freelance cartoonist and graphic designer and this situation is ruining my productivity. I've left this amount of detail because I feel like I've tried everything, and ruled out all the possibilities. Right now I'm cloning my hard drive yet again to see if maybe both my hard drive and my software was failing. But I thought maybe someone on this forum may have another idea.
Thanks very much for your time.
-scott
iMac G5 Mac OS X (10.3.9) upgraded to 2GB RAM

Hi. It's me again. My name is slightly different because the forums won't let me log in for some reason. Strange.
Anyway, I was wrong before, this problem is not solved. It's resilience is astounding, as I've been completely obsessed with this problem for over a week now.
Anyway, I've tried alot. In respose to the previous inquiries, the S.M.A.R.T. reads verified and I've run the hardware check DVD and everything comes up roses.
The weirdest thing about this problem is that many things will fix it for a little while. Dumping my Photoshop prefs seems to help for a little while.
Also, this computer can't tell time. I realized that my CR2032 battery on the motherboard may be dead so I replaced it. The first time it acted a little funny in Photoshop, and then I dumped the prefs folder and it seemed to work fine. Went to work, it went to sleep, I came home and it was dead again.
I replaced the battery again just to make sure. Both times I reset the PMU by holding down the power button when I plugged it in. No luck.
I've also reinstalled the operating system twice. I've erased the StartUp partition when I've done that. I've been very careful about repairing permissions when I install new software, and I built my desktop very deliberately. Again, this seems to help as I'm going, but eventually it crashes once and eventually deteriorates to consistently crashing in Photoshop after even a couple of minutes.
To test whether my Adobe software is bad I borrowed a friend's installation disks. Those didn't work either.
And while it's mostly Photoshop, sometimes it's not. When it's really bad iTunes will crash too, and a combination of Photoshop and iTunes can be deadly. If it's on its best behavior, iTunes can play while Photoshop is open.
Once the freeze happened immediately after startup, but before the OS came up entirely.
If this were a Windows PC, I'd be sure I have a virus. Small changes cause increased stability and then slow and consistent deterioration.
All remaining theories I have are wild speculation involving conspiracies by the Apple company and/or Apple store. I'm very close to calling this computer a lemon. Are there any ideas left???

Cursor freezes after site change Mavericks

My cursor freezes for various amounts of time since downloading Mavericks. Any body else as I'm going to talk to Apple support under Apple care and they tell me no one else has this problem.

I had the same problem. I have found a work around - sort of. I have unchecked the option to "Allow Bluetooth devices to wake this computer" (System Preferences / Bluetooth / Advanced). I no longer have the problem. Having to wake the computer another way (I have a USB wireless mouse so no problem for me) and waiting a second or two for the bluetooth devices to connect is less annoying than continually losing trackpad connection. I hope that helps you too.

Cursor freezes on startup mac mini

Cursor freezes at upper left corner of screen. Using my new Mac Mini. The one with the least amount of storage and most recent Mac OS. Occurs when using third party usb keyboard or Microsoft wireless keyboard and Logitech wireless trackball. Same problem when using OEM Mac wireless mouse. Haven't tried it yet using OEM Mac wireless keyboard. Have to buy one.

Which version of iMovie are you trying to run?
I just updated to latest iMovie 2.1.2 on my iPad Mini with iOS 8.3 and I am in, all video/photos show up. Perhaps a troublesome video clip downloaded from internet?

My cursor freezes about once or twice a day.

When the cursor freezes, the caps lock key lights up green. When I am working on a document this is a huge problem, as I often lose content. Also, the keyboard has started to do strange things like repeating a key many times or deleting whole lines if i press delete. Any one with similar problem? Any advice much appreciated

Hi Raymon
Maybe unselecting "ignore accidental trackpad input" (or something similar, my mac os is not english) in the keyboard-preferences helps. When you have that turned on, the cursor will not react while you are typing. Maybe your mouse is incompatible with that function or something.
Bye
Xavier

Cursor freezes completely each time with mac os x 10.6.8

Hello, mac friends,
I have a Macbook Pro with 8Gb and upgraded from 10.6.3 to 10.6.8 recently.
All was well for some but since one week, the cursor freezes when I use either Safari or Mozilla, and and basically the whole system jams.
I cannot do force quit. Unplugging my mouse (logitech) or just using the trackpad works and I simply need to do a forced close down with the
on button in the right upper corner.
I have tried a PRAM reset, a Disk Utility with repair disk permissions and disk repair, and using Disk Utility through the Installer Disk but nothing
seems to help. I have upgraded both Safari and Mozilla, but still the same issue crops up.
What is wisdom here? Downgrade from 10.6.8 to a earlier version? Upgrade to LION? or set up a new user or admin account? I have seen various
threads on the internet but never a definite answer and someone content that his/her problem with the cursor freeze was resolved.
Please let me know - I think quite a number of other mac users have the same issue.
Thank you,
Saab96

I have a similar problem with my early 2009 Macbook Pro 10.6.8 and have been working on it for several weeks. Something is cuasing my mouse (USB or Logitech Wireless) to stop functioning normally. At first I thought it only happened after the Mac was asleep but it just happened again while I was using it.
I've cleaned house as far as possible potentially offending programs including getting rid of all browsers except safari.
Repaired Disk Permissions, Veryifeid the Hard Disk which had some bad sectors after 3.5 years of use. So I replaced the drive with a Seagate 750GB drive. Did a Time Machine recovery from a point in time prior to the problem ever occuring.
Relentless searched through the Console logs each time it happens but it does not seem to point to one thing.
Crash Reporter does not even pick it up and create a report.
I ran Memtest for hours two times and can find nothing wrong with the memory.
Reset the SMC
Reset the PRAM which if I understand it correctly also resets the NVRAM?
Yesterday I did a fresh install of Snow Leopard using the Archive and Install function to create a new system wothout nuking the drive and my USer/networksettings etc.
Ran updates on the system to get it back to 10.6.8
And it happened again. I clicked on a window and the "Select" function just hung so no mater where I moved my mouse it kept selected everything. It would not close windows or perform any mouse like functions.
The command-quit function worked this time and I can always open & run the Force Quit window and shutdown. It'sl like the machine is doing everything except mouse functions.
The "crash" does seem to affect my Parallels 8 virtual machine as I am able to quit W7 and shut down parallels normally.
I have over 2GB of free RAM out of the 4GB installed
Temperature Monitors seem normal.
I'm really starting to think its hardware....
I"m going to hard wipe the drive and do a clean install of Snow Leopard next and not install any third party programs whatsoever. But before I waste any more time on this if anyone has any ideas on this I would appreciate hearing them. Apple support has been giving me ideas and veyr helpful as usual but this isn't fixed and I can't live with it.
This machine never crashed. But since the last week in August it does this constantly at least a couple time a day.
Thank you for any assistance.

HT203176 cursor freezes on mac osx 10.8.5

cursor freezes on mac osx 10.8.5 have to re-launch finder to regain control, using wireless mouse.
This happens at various times but more noticable after wakeup.
Any ideas?

When you next have the problem, note the exact time: hour, minute, second.
If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Scroll back in the log to the time you noted above. Select any messages timestamped from then until the end of the episode, or until they start to repeat. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V).
When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.

Myst V: End Of Ages Freezing Problem Solved

I could not play Myst V after upgrading to Mac OS X 10.4.8 or 9. Video would stop on a still frame, while audio continued on. Apparently the latest versions of the Mac OS have reverted to an earlier version of the ATI ROM Extender file, which is located in System/Library/Extensions/AppleNDRV. The version of that file supplied with 10.4.8 and 10.4.9 is 1.2.2f2. I found a later version, 1.2.7f2 on my TechTool e-Drive partition, which is running Mac OS X 10.4.6 (IIRC). Replacing that file has allowed me to play Myst V again. There is still a little stumbling in the video during Yeesha's monologue at the beginning of the game, but it recovers itself without freezing the computer.
Hope this helps anyone with Myst V problems.
PowerMac Dual 2.7 GHz G5 Mac OS X (10.4.9) May 2005 Build

Some time after I wrote the above "tip," thinking it was the solution, my computer froze once again. As a result, I downgraded to 10.4 with its bundled ATI software version 1.4, and tested again. Same problem... cursor freeze at random spots in the game. So, one iteration at a time, I upgraded the Mac OS X (along with its supplied ATI bundles), testing Myst V with each one. And every one, all the way to 10.4.9 with its ATI bundle v1.4.18, had the same problem. The ATI ROM Extender really did not help, although the game did pick that configuration to work for the longest time, not freezing until well into the Age of Taghira.
I have since added 1 GB of RAM (no help either), and have also played with the Activity Monitor, killing all the processes that would stay dead before starting the game. No help.
Incidentally, somewhere in the updating of the Mac OS and its ATI graphics software, the ATI ROM Extender disappeared. I am thinking it may be supplied with ATI's software for retail cards, which was another thing I tried installing. But I have only the Apple-supplied ATI 9650 graphics, which apparently doesn't require the ROM Extender. At least, the game works about as well without it as with it.
Sorry if I have misled anyone. I'm still working the problem. I have found that the "Default" Video Options chosen by the Myst V program for my computer may be too optimistic. I have found that by moving the "Anti-aliasing" and/or the "Anisotropic filtering" sliders to the left, that the frequency of freezes is reduced, but not eliminated.
The puzzle remains: Why did it work a year ago on this computer but not now? Perhaps dust on the graphics circuitry is causing it to run hotter? Any ideas out there?

After Software Update, USB Power Issues and Cursor Freezing

I have a 1.8 dual g5. After the latest software update I experienced some seriously quirky usb power fluctuations, a card reader frying and sudden, but temporary, mouse cursor freezing. I did some research and went for a clean install from original Leopard disc and downloaded the combo update 10.5.2 from apple support. I then restarted in "safe mode" and ran the 10.5.2 update, restarted, zapped the pram, restarted to disc warrior to repair permissions and clean the drive... then restarted again. Same deal: Spinning lines on gray 1-2 minute. black (sometimes white) screen 3-5 minutes. blue screen 1-2 minutes. log in.
Tried cocktail, disc utility permission repair and removing log-in applications/drivers. Same deal... ****** computing. I feel like it's 1999 all over again.
Cost me three full days work so far under a very tight deadline and a lot of stress..... Apple is 100% responsible for this messy release and needs to address it quickly.

My problem is similar to the others already posted, but quite different too. Perhaps someone else has had this strange issue occur. I attach my nike+ receiver and set my workout as usual, and then I come to selecting playlists. I select my playlist (which is titled running) and my work out starts. HOWEVER, the playlist that I selected plays music from another playlist such as sarah mclachlan (which is not in my running playlist). I have tried everything that you guys already posted short of doing a restore. Any thoughts? I posted this same question on the nikeplus.com web forum but no one has replied. I can find no sequence to the playlist malfunction. For example say I choose to play my sarah mclachlan playlist it will play my irish playlist instead and so forth. Make sense? HELP!!!!!

Cursor freezes then screen turns blue....

Hi All. This is the only issue my MacPro has had in the 1.5 years or so that I've owned it. Every once in a while the cursor freezes, the screen turns blue for about 4 seconds then everything goes back to normal. It's not really a problem but it's kind of annoying. Has anyone else seen this strange behavior? I'm thinking that re-installing the OS would fix it but that seems a little drastic.
Any ideas?

Hi, How much Free Space on your HDD?
Two ways to go on this...
"Try Disk Utility
1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
The usual reason why updates fail or mess things up, is if Permissions are not fixed before & after every update, with a reboot... you may get a partial update when the installer finds it doesn't have Permissions to change one obscure little part of the OS, leaving you with a mix of OS versions.
Some people get away without Repairing Permissions for years, some for only days.
If Permissions are wrong before applying an update, you could get mixed OS versions, if Directory is the slightest messed up, who knows!
Or...
I think you should get Applejack...
http://www.versiontracker.com/dyn/moreinfo/macosx/19596
After installing, reboot holding down CMD+s, then when the DOS like prompt shows, type in...
applejack AUTO
Then let it do all 5 of it's things.
At least it'll eliminate some questions if it doesn't fix it.
The 5 things it does are...
Correct any Disk problems.
Repair Permissions.
Clear out Cache Files.
Repair/check several plist files.
Dump the VM files for a fresh start.
First reboot will be slower, sometimes 2 or 3 restarts will be required for full benefit... my guess is files relying upon other files relying upon other files!
Disconnect the USB cable from any UPS so the system doesn't shut down in the middle of the process.

Weird Cursor/Freezing Problem

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