Random freeze while browsing

Greetings,
I have, in the last couple of weeks, run into an issue that someone else here may have seen.
While browsing the web with either Safari or Firefox, my machine will occasionally lock up. The cursor moves, but nothing is selectable, the dock is unresponsive, force-quit key combo does nothing, and I hear a very distinct processor screech as soon as it begins. The only way out is a hard restart (tried waiting over an hour to no avail). It doesn't appear to matter what page I'm browsing, and nothing is written to any log to give me a clue. It can happen after a few hours or a few minutes, and, very rarely, more than once on any given day.
I think it's a runaway process (due to the processor screeching), but have yet to pinpoint the source. I have recently updated the video card from ATI 9600 64MB to an OE 9800 Pro Special Edition 256MB.
I am connected via Bellsouth DSL, with nothing between my machine and the modem but the ethernet cable.
Any thoughts?
Thanks!

Dear Doug,
Welcome to Apple Discussions.
Seems like a system wide issue could be because of Webkit. But lets first try to fix Safari and see if it make a difference.
1. Drag com.apple.Safari.plist to the desktop. Location Home user > Library > Preferences > com.apple.Safari.plist
2. Delete user caches. Location Home user > Library > Caches
3. Run disk utility to repair permissions.
4. Reset PRAM. Follow article http://docs.info.apple.com/article.html?artnum=2238
5. Check if the Safari is working fine. If not then make a new Admin user from System Preferences > Accounts and check all the other applications if they are working fine.
6. If the issue persist then this is indeed a system wide issue. You will have to backup user data and perform an archive and install without preserving user and network settings. Then you can do a combo update to 10.4.6
Hope this helps.
Good Day!
Ravi Dimri.

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MSI P35 Neo-F (MS-7360): Computer randomly freezes while playing games

Hi there,
I have reached the end of my technical knowledge right now and I'm not even sure if this area of the forum is appropriate. The problem:
While playing higher-end games like Crysis 2, Anno 1404, Mass Effect 2 etc. my computer randomly freezes and the last few milliseconds of sound are being looped on my speakers (kind of like a buzzing sound).
By "freezing" I mean that my computer becomes unresponsive to any action other than pressing the Reset-Button or holding down the Power-Up-Button (no reaction to Ctrl+Alt+Del, Alt+F4, Alt+Tab, no mouse movement... you get it).
There's no exact timing as to when these freezes occur. The fastest freeze happened after less than a minute of playing a game, slowes one (just today after switching to my newer case with better cooling) took about 2 hours.
This freeze only occurs while my System is under load. No freezes while browsing the web, using office programs, listening to music or watching videos.
System Specs:
Mainboard: MSI P35 Neo-F (MSI-7360)
CPU: Intel Core2Quad Q6600 @2.4GHz
RAM: 4x 1GB DDR2-800 Corsair XMS2
Graphics: Gainward GeForce GTX 560 Ti, 1GB GDDR5 VRAM
PSU: Antec High Current Gamer 620W (upgraded from Xilence XP600, 600W)
New CPU Cooler: Arctic Freezer 13 Pro (upgraded from OEM Intel Boxed Cooler)
New Case: Zalman Z9 Plus w/ 4x 120 mm Fans (Upgraded from a Case with only 1x 250mm side Fan)
2 Western Digital HDD (1x 2TB, 1x320 GB)
1 DVD Reader/Burner (unimportant for that error I guess)
OS: Windows 7 Ultimate 64-Bit
2 Screens: 1x 24" Asus VS248H and 1x 21" LG Flatron Wide W2240T
Since this error is bugging me for quite a while now and since this is not the first forum I'm trying to get help from, here's a list of steps i already took to get rid of it, obviously to no good use:
reinstalled games where the freeze occurred
updated all Drivers (including cleaning old versions in safe mode; also tried older drivers)
updated BIOS to v1.A0
Reinstalled Windows
bought new Case and CPU Cooler to improve Air Flow/Cooling
checked Seating of all components (took out, cleaned, reapplied thermal grease where neccessary, re-inserted)
cleaned old case of dust (obviously no problem in the new case, which is 2 days "old")
ran 7 sequences of Memtes86+ without any errors
ran Prime95 without any errors for about 45 Minutes
ran Furmark for 15 Minutes under full load (burn-in test) without any problems, even though my graphics card hit the 100°C frequency-cut level
ran Furmark and Prime95 simultaneously without any problems
took records of component temperatures and system voltages without noticing anything unusual (at least not after i switched to the newer PSU, which is about 1 Month old - yet didn't resolve the problem)
tested with cyclic removal of 1 RAM device to further rule out RAM malfunction
tested with only 2 RAM devices in dual channel mode (Slots 1 and 3)
tried to reduce RAM clock (800 MHz --> 667 MHz) to no avail
checked S.M.A.R.T. values of HDDs, no issues reported
tested without any background programs
raised/lowered voltages to RAM, CPU and Chipset in BIOS to increase logic circuit stability/decrease heat production
I need to mention: After I transferred my system to the new case, i was able to play longer than average compared to my old case. So I am guessing that improper cooling was part of the problem, yet improving cooling obviously didn't resolve it.
Since these freezes are really annoying and nobody could help me resolve this so far, I'm hoping to find some new ways of narrowing down the problem or even getting rid of it here.
Regards
Sebb

Quote from: Bernhard on 10-July-12, 13:15:30
Lets be realistic. A system with a 560TI is recommended to have a around 31Amps under full load, a CX500 would be sufficient.
Have you monitored your CPU and memory utilisation ?
As suggested before, test the GPU in another computer to see if the behaviour is the same.
Whew, I thought for a second there that my common sense had left me when I saw that 60-Amp-Post ^^
Yes, I monitored CPU and RAM usage, there is no recognizeable pattern to be seen and it almost never happens under full load.
I will see if a friend of mine can test my GPU on his computer, and I will test it underclocked right away.
Though one more question regarding that: Should I only underclock GPU Core Clock or both Core and RAM clock?

S4 freezes while browsing the web

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Are you using WiFi or Verizon network? Does this happen at the same location or where ever you go?

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Another week goes by and now I am really frustrated. Calls to Verizon are the typical; there are no problems, just reset,restart,or go exchange for a new one.
And now I found the following video that suggests it's the 4G network itself.
http://www.youtube.com/watch?v=-AQMMK87N2g
Verizon is supposed to be a great company! Why would they destroy their reputation just to make a quick few million dollars. The Customer Service/tech support was a horrible experience and the 4G network doesn't seem to work properly.
A call tonight to Verizon concluded with "well with any new technology there are bound to be some issues, over time Verizon should have some type of fix".
Where is the class action lawsuit?!?!

JV1, if you are early enough to get out of the contract, do it! If you browse through these forums (and other on internet) you will find this is Verizon 4G, it will NOT get better anytime soon. This problem has existed since launch, through the 4510L is the worst device they have, it's not the culprit, I have had all of them. It is the network.
Oh and by the way, Verizon isn't stupid, someone else pointed out to me the small print on the contract prohibits you from pursuing a class action suit against them. All disputes have to be settled by arbitration which is binding per contract. Guess they knew this would happen......

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[[http://www.thecreatorsproject.com/blog/5000-fiber-optic-flowers-invade-museum-grounds-in-ifield-of-lighti]]
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Pacman randomly freezes while installing packages.

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Last edited by Lockheed (2010-06-14 17:12:32)

Skype freezes while typing at random times. Window...

I'm using Windows 8 Pro (64-bit), along with the desktop version (not the app). But I also recall having a bit of trouble with this on my laptop (Windows 7 home edition 64-bit) as well.
At random times in the middle of my typing, Skype will freeze. It will remain frozen for a few minutes. When this happens, I usually just minimize it and do something else and check back on it to see if it's working. It always unfreezes, I haven't had a crash yet. However, this is getting to be very annoying. It happens rather frequently and interrupts my chat with friends.
I have already made sure that skype is not running in ADMIN or DEBUG mode, etc etc. I'm also using the latest version of Skype.
What could be causing this? And how might I be able to fix it?

Win 8.1
Using the Desktop version because, well, the modern version is unworkably stupid in too many ways to express.
30-60 second random freezes while typing. No crash. And call still work.
These type of Microsoft FAILS can surely drive a person to insanity.
Why do simple applications like these reduce in performance year after year wile doubling in file size many times over?
Years with this issue occuring and no solution from Skype. I am beyond words

Opening PDF's in IE Browser randomly freeze - Adobe Reader Version 11.0.06

Hi,
We have an Intranet site which has a lot of PDF documents on it, when clicking on the hyperlink for documents the status dialog appears and will randomly freeze and not open the document. Turning the addon off for Adobe Reader so that they open in the Reader interface resolves the problem as does using Chrome or firefox also using Foxit reader resolves the issue.
Has anybody else come across the issue and resolved it? I have attached a screenshot of the status bar showing how it stops randomly at any point.

All I can suggest is that you try a repair of Internet Explorer: http://support.microsoft.com/kb/318378

Intermittent random freezing (mid 2012 MBP)

For the past year or so my Macbook Pro (mid 2012) has suffered from random freezes which require a hard reset.
Often these will occur only roughly once a week, but in the last couple of days (incidently since updating to 10.9.3, although such bursts have occured in the past and then settled down) it has been happening 4 to 5 times a day, getting to the point of being seriously disruptive.
I have, over the past few months, made several attempts to find the cause in vain. I am an experienced Mac user with a good understanding of computers, and I've never found a problem so mysterious to me. I'll break down first the symptoms and then what I have done to tye and find the cause.
Symptoms: Normally I will first notice that web pages aren't loading, but I can switch apps without problem. However, if I try and close an app or open another, that app then starts to hang. Progressively, everything starts to hang and I can no longer even switch apps, and everything gives me a spinning beachball. Eventually, even sound/music cuts out. Only a hard reset (holding down the power key) saves it.
Diagnosis: I have run all types of hardware checks, from apple's built in tests (fsck), RAM tests such as memtest, and third party testing suites which have checked the HD, RAM, CPU, GPU etc. All of them have come back 100% clean. I have repaired permissions, which also has no effect.
This made me think it could be a software issue. However, the crashes display no discernable pattern, and are completely (as far as I can see) un-reproducible. They have occured while I have been using a wide range of apps, and don't seem to be triggered by any particular action; e.g. they can occur while I am blankly reading a webpage or a pdf document. Further, the console shows absolutely nothing. The log messages appear completely normal, sometimes there are even no messages corresponding to within several minutes of the crash.
I haven't been able to verify if it is restricted to my user name, since generally the crashes are so intermittent I would have to use another username for several days, if not weeks, to really check this - something than is not practical given that I need the laptop to work on.
Does anyone have any idea what could be causing the issue, or anything further I could try to diagnose it? I am reluctant to take it to an applestore, as it is out of warranty and I can't think of any tests they could try that I have not.

OGELTHORPE wrote:
Alastair Abbott wrote:
I am reluctant to take it to an applestore, as it is out of warranty and I can't think of any tests they could try that I have not.
An Apple store genius bar appointment and evaluation is for FREE! You have no idea what type of tests they may have, so make an appointment.
Thanks for pointing that out. Until very recently I lived in a country where there are no Apple stores nor Genius bars, so I wasn't aware of that.
I've tried safe boot, but as I said the problem is intermittent enough that it's not clear if it helps, and working continuously in safe boot to see isn't really an option.
No - there are no kernel panics, just the unexplained freezes.
Here is my etrecheck report:
Hardware Information:
          MacBook Pro (13-inch, Mid 2012)
          MacBook Pro - model: MacBookPro9,2
          1 2.5 GHz Intel Core i5 CPU: 2 cores
          6 GB RAM
Video Information:
          Intel HD Graphics 4000 - VRAM: (null)
System Software:
          OS X 10.9.3 (13D65) - Uptime: 0 days 0:26:37
Disk Information:
          TOSHIBA MK5065GSXF disk0 : (500.11 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) / [Startup]: 499.25 GB (38.52 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
          HL-DT-ST DVDRW GS31N
USB Information:
          Logitech USB Receiver
          Apple Inc. Apple Internal Keyboard / Trackpad
          Apple Computer, Inc. IR Receiver
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
          Apple Inc. FaceTime HD Camera (Built-in)
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Gatekeeper:
          Anywhere
Kernel Extensions:
          [not loaded] at.obdev.nke.LittleSnitch (3876 - SDK 10.8) Support
          [kext loaded] com.sophos.kext.sav (9.0.3 - SDK 10.7) Support
          [kext loaded] com.sophos.nke.swi (9.0.3 - SDK 10.8) Support
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist Support
          [running] com.cleverfiles.cfbackd.plist Support
          [loaded] com.microsoft.office.licensing.helper.plist Support
          [loaded] com.oracle.java.Helper-Tool.plist Support
          [loaded] com.oracle.java.JavaUpdateHelper.plist Support
          [loaded] com.paragon.ntfs11.refresh.plist Support
          [running] com.sophos.autoupdate.plist Support
          [running] com.sophos.configuration.plist Support
          [running] com.sophos.intercheck.plist Support
          [running] com.sophos.notification.plist Support
          [running] com.sophos.scan.plist Support
          [running] com.sophos.sxld.plist Support
          [running] com.sophos.webd.plist Support
          [not loaded] org.freedesktop.dbus-system.plist Support
          [loaded] org.macosforge.xquartz.privileged_startx.plist Support
Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist Support
          [loaded] com.oracle.java.Java-Updater.plist Support
          [loaded] com.paragon.updater.plist Support
          [running] com.sophos.uiserver.plist Support
          [not loaded] org.freedesktop.dbus-session.plist Support
          [loaded] org.macosforge.xquartz.startx.plist Support
User Launch Agents:
          [loaded] com.adobe.ARM.[...].plist Support
          [loaded] com.adobe.ARM.[...].plist Support
          [failed] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist
          [failed] com.google.Chrome.framework.plist Support
          [loaded] com.google.keystone.agent.plist Support
          [running] com.spotify.webhelper.plist Support
          [loaded] com.valvesoftware.steamclean.plist Support
          [running] ws.agile.1PasswordAgent.plist Support
User Login Items:
          iTunesHelper
          TotalTerminal
          Dropbox
          SpiderOak
          AdobeResourceSynchronizer
          Google Chrome
          EvernoteHelper
Internet Plug-ins:
          SpeedDownload Browser Plugin: Version: 2.1.5 - SDK 10.6 Support
          Unity Web Player: Version: UnityPlayer version 4.2.1f4 - SDK 10.6 Support
          Default Browser: Version: 537 - SDK 10.9
          Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 Support
          AdobeAAMDetect: Version: AdobeAAMDetect 1.0.0.0 - SDK 10.6 Support
          FlashPlayer-10.6: Version: 13.0.0.214 - SDK 10.6 Support
          Silverlight: Version: 5.1.20913.0 - SDK 10.6 Support
          Flash Player: Version: 13.0.0.214 - SDK 10.6 Support
          QuickTime Plugin: Version: 7.7.3
          Mathematica: Version: 9.0.1.4055068 Support
          SharePointBrowserPlugin: Version: 14.4.1 - SDK 10.6 Support
          JavaAppletPlugin: Version: Java 7 Update 55 Check version
Safari Extensions:
          Omnikey: Version: 1.0.9
          Searchme: Version: 1.3
          1Password: Version: 4.1.0
          AdBlock: Version: 2.6.18
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 2.0 - SDK 10.9
          AppleAVBAudio: Version: 203.2 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
          Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User Internet Plug-ins:
          RealPlayer Plugin: Version: Unknown
3rd Party Preference Panes:
          Flash Player Support
          Flip4Mac WMV Support
          FUSE for OS X (OSXFUSE) Support
          Java Support
          Perian Support
          TeXDistPrefPane Support
Time Machine:
          Skip System Files: NO
          Auto backup: YES
          Volumes being backed up:
                    Macintosh HD: Disk size: 464.96 GB Disk used: 429.09 GB
          Destinations:
                    Macbook Backup [Local] (Last used)
                    Total size: 465.14 GB
                    Total number of backups: 23
                    Oldest backup: 2013-05-12 21:27:14 +0000
                    Last backup: 2014-05-17 11:23:10 +0000
                    Size of backup disk: Too small
                              Backup size 465.14 GB < (Disk used 429.09 GB X 3)
          Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
Top Processes by CPU:
               3%          WindowServer
               1%          mds_stores
               0%          Google Chrome
               0%          fontd
               0%          mds
Top Processes by Memory:
          184 MB          mds_stores
          166 MB          com.apple.IconServicesAgent
          154 MB          InterCheck
          147 MB          SophosScanD
          135 MB          Google Chrome
Virtual Memory Information:
          308 MB          Free RAM
          2.66 GB          Active RAM
          2.36 GB          Inactive RAM
          686 MB          Wired RAM
          574 MB          Page-ins
          0 B          Page-outs

MSI GD65 - Win7 64 Prof. Random freezes

Edit: Setting DRAM Voltage to 1.65V instead of 1.5V seems to help a lot!
Edit: BIOS 1.6 is giving hopeful results for automatic OC (Genie) too.
In an attempt to aggregate the information on this, topics that seem to be related (to me):
https://forum-en.msi.com/index.php?topic=133870.0
https://forum-en.msi.com/index.php?topic=133680.0
https://forum-en.msi.com/index.php?topic=133585.0
https://forum-en.msi.com/index.php?topic=133626.0
https://forum-en.msi.com/index.php?topic=132681.0
https://forum-en.msi.com/index.php?topic=132105.0
https://forum-en.msi.com/index.php?topic=131535.0
https://forum-en.msi.com/index.php?topic=131457.0
https://forum-en.msi.com/index.php?topic=131466.0
https://forum-en.msi.com/index.php?topic=131162.0
(I only included GD65-topics)
Low voltage memory reading material:
http://www.evga.com/forums/tm.aspx?&m=5080&mpage=1
______ Original post __________
Like others I've been plagued by random freezes in using my newly built system, based on the GD65.
What happens:
1/6 times BSOD and restart.
5/6 times a simple freeze, with, if present, (analog) sound output relooping the last second of output or producing a more garbled stream of sound.
When does it happen:
- 1/5 times when doing nothing (save for uTorrent running in the background). I.e. returning to my machine, it won't respond to input, or if the screen has stayed on, shows the machine to be in a frozen state.
- 4/5 times when browsing, and especially when watching flash-based movies (flash 10.1 prerelease). That might be a biased memory, though, as these freezes always produce very _memorable_ sound relooping.
The system can be stable in continuous operation (including uTorrent) from anywhere between 1 hour to 4 days, before the abovementioned occurs.
The system:
- MSI P55-GD65 (Foxconn socket, BIOS 1.5)
- i7 860
- 2x 2GB Corsair Dominator 1600MHz CAS 8 --> CMD4GX3M2A1600C8 (DIMM1 and DIMM3)
- Corsair HX850W
- Intel 80GB Intel X25M 2,5" SATA (IRST 9.5 drivers installed)
- 2x Samsung 1000GB Samsung HD103SJ
- Windows 7 64bit Professional (on SSD)
I've tried the following:
- Reseating the CPU.
As far as I could see there were scuff marks on all pads and in the socket, no pins were bent or seemed abnormal. I must say that during the reseating I was struck by the very shoddy-feeling latching mechanism.
- Varying BIOS settings. Many, from the most default to custom OC, to OC Genie based settings. Interestingly, the non OC'd settings seemed to perform the worst.
Looking back into the various BIOS profiles I stored, I see that I haven't tried (d'oh!) the combination of:
- A higher DRAM voltage
- Relaxed DRAM timings
- Standard base clock
I'm going to try this and see if that will make my system run stable. I'll update somewhere later this week.
In the meanwhile, I'm very interested as to what people think concerning the times at which the freezes occur (for me and for quite a few other accounts I found scattered around). From what I can gather:
- These freezes almost never occur when the machines are stressed.
- They seem to occur more frequently when users are using their browsers.
- Vista and Win7 seem to suffer from more freezes than XP installations (there is an account of a dual-booting guy stating this) with XP installations generating more BSODs instead of freezes.
- Memtesting generally reveals no issues whatsoever, nor does prime95-testing.
I can't get my head around this behaviour. You'd expect that with hardware that is on the edge, when it comes to margins in voltages and timings and what not, stress testing would surely push it over that edge. Are we dealing with voltage fluctuations or certain patterns of memory usage that cause these issues?
Again, very interested what your take is on this.

Hi everyone! Let me contribute in diagnosing the problem.
I've bought P55-GD65 in november'09 (BIOS version 1.0) along with OCZ DDR3-1600 Gold 2*1Gb Kit. Installed Win7 32-bit. Every few hours I was getting BSOD with something like "BUGCODE_USBDRIVER". I thought this was Windows fault, that's why I've tried Vista SP2 (error at first boot) and XP (hang while copying files). In Win7 several times I've seen corrupted screen, Aero switching off and sluggish performance.The error became less frequent when I set memory to 1333Mhz and raised voltage to 1.65v as there was only 1.5v in the SPD. And there wasn't dependency whether one module was used or both two — BSODs were inevitable.
Later I've tested one Rendition 2Gb DDR3-1333 module. 1T or 2T — infrequent BSODs/freezes.
I've upgraded to BIOS v1.4 and installed two ordinary Hynix 1333Mhz CL9 modules. A new BSOD "IRQ NOT LESS OR EQUAL" began to appear along with these weird freezes roughly twice a week. My PC became more usable and I decided to keep Hynix memory.
Two months with BIOS 1.5 were stable - only 2-3 BSODs, but I think that were application errors or faulty ATI driver. Memory was operating 1333@[email protected].
BIOS 1.6 brought back freezes. 3-6 times a week. The only positive aspect: 3.24 Gb was available for Windows against 2.99Gb in previous BIOS versions. 19.02.2010 I updated to v1.7. So far no freezes, errors.
Short resume
Freezes and errors are appearing in Win7 32-bit with BIOS 1-1.4 & 1.6. Memory voltage, frequency can affect the periodicity of errors. I haven't tried OC Genie yet because of unstable PC operation in normal mode.
My observations
Many hardware sites stated that there's no need for any cooling sinks or heatpipes for P55 chipset and any cooling system of tested mainboards were slightly warm. In my case, the heatpipes and sinks are hot most of time. Maybe this is a result of stock Intel cooler (2cm height)?
Also 6 power LEDs are constantly on, slightly blinking when watching HD video.
In 3D games (GTAIV, Mass Effect2, Tropico3, Burnout, Red Alert3) even for many hours playing — no freeze or BSOD.
The computer normally goes to S3 (hibernate) and resumes for several times a day.
The temperature of individual components is within reasonable limits.
I can confirm that after browsing FLASH-rich websites you should expect freeze in 30min. This time shortens while watching fullscreen avi-files afterwards.
My config
Windows 7 32-bit Ultimate
Intel Core i7-860 (stock cooler) /MSI P55-GD65 / Hynix 2×2Gb PC3-10600 / Sapphire Radeon HD4850 512Mb (reference) / Samsung HD501LJ, SP1614C / LG GH20LS15 / K-World TV878RF Pro / Chieftec CFT-560-A12C / CoolerMaster Cosmos S
HP LP2475w / Logitech MX Revolution / Genius KB21e / Canon Pixma iP4000 / Wacom Bamboo Fun A5
It seems to me that there's some electric power issue in P55-GD65. Maybe it's related to MOSFETs overheating? Or weird Vdroop setting? Or, the worst, critical fault in the board design? Or we've got defective samples...

My imac freezes while on Safari.

The color wheel turns, force quit does not respond, the clock even stops. I've left it like that overnight and when I awake it the next day the color wheel is still turning. I have to shut it down with the power button and after I restart, then go open Safari, I get thin (one pixel?) horizontal lines almost totally across the screen, at random areas, when I scroll.
It will also randomly freeze when minimizing a window or working in iPhoto.
Mac OS 10.5.8 2.16 Intel Core 2 Duo 2GB 667 MHz DDR2 memory & NVIDIA GeForce 7300GT Software updates are current.

I have the same issue with Safari. Most of the time while scrolling. It has caused countless files which happened to be open at the time of the freeze to be damaged. I took my imac in to Apple and they found nothing wrong. Said it was a software issue.
I have this freeze/hard boot to happen sometimes 4 times per day. I have to close all files when I need to use Safari or any web browser to avoid having them damaged when it inevitably freezes.

2010 Mini random freezes

My wife upgraded to a 2010 Mini (2.4GHz) early this month and she has started have random freezes where everything stops and you have to power cycle the mini to get it running. You don't even get a beachball, it just stops. It started late last week as an occasional thing and by Wed. evening it was every 30 minutes. I spent spent Wed and Thursday evenings doing all the normal stuff:
1. Disconnected the external hard drive (my suspected cause due to some TM backup warnings)
2. Zapped the Pram
3. Started from system disc & repaired permissions (4 times)
4. Ran diagnostics which said no problems.
5. Did the SMC reset.
6. Ran Onyx with almost all the options turned on.
Running Onyx seems to do the most good and I thought we were past the problem. This morning, another crash. My wife had iChat and Firefox open and while on the web everything froze again and after 10 minutes she use the power button to turn the Mini off and on.
We did swap out the 2x1GB for 2x2GB from OWC but that seems to be testing fine. There is a USB hub attached but I swapped the hubs from my rig to hers and the one from hers is working fine with my 2009 Mini.
At this point, I'm stumped.

Upgraded from a Core Duo Mini. She does have a few things (mostly older games) that might use Rosetta. However, the problem doesn't seem to be confined to those items. That has been one of the puzzling things, there doesn't seem to be rhyme or reason to the freezes. No one piece of software (except maybe iChat) is running when this happens, she doesn't keep a lot of browser windows or different programs open in the background, and she didn't have this problem with the old machine.
Her typical configuration is to have Firefox, mail and iChat on in the background and either a game or Preview and/or OpenOffice in front. The games are Plants vs Zombies, Luxor, World of Goo, or similar stuff.
I did notice when I did the permissions repair that the majority of the corrections seemed to be in things relating to Java.

IMac (i3 2010) random freezing and now with 3 beeps

Hi I have a 21" iMac i3 base model with 8Gb of Ram (see below).
Ever since I got the mac about 10 months ago it has been randomly freezing up, becoming completely unresponsive to any input (keyboard mice etc), and can only be fixed by a hard reboot (holding down power button).
It can happen while I am away at lunch and I come back to find it frozen on the screen saver. Other times I'm just browsing the web (nb has happens with safari, firefox, and chrome). While others times I have been using the system to its fullest. There never seems to be a reproducible way of triggering it. I can go for a week without issue, and then it can happen 6+ times a day, and they go back to being fine again for awhile. Although it has been getting progressively worse over time and more constant.
I have tried repairing permissions (disk utility and onyx). Defraged the drive (drive genius), run TechTools pro and it passed all the tests. I don't have access to the orginal disks (work iMac) so running the AHT is not possible, as is a clean instal.
I updated to 10.6.8 this week, and now when it freezes, it is now accopained by 3 loud beeps...pause...3 beeps etc etc.
This suggests that it could be a memory problem, but I have never had a problem during the boot up process, and as I said it has passed the memory test on both TechTools6 and Rember, I'm not sure if this is the case.
Because the system completely frezzes, there is no log or error reports created, meaning that pin-pointing the issue or even having proof for the tech-guys/Apple is difficult.
Has anyone got any suggestions on a fix, or how I might be able to get an error report, or how I could induce the problem on que.
Thanks heaps
a
Model Name:          iMac
Model Identifier:          iMac11,2
Processor Name:          Intel Core i3
Processor Speed:          3.06 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache (per core):          256 KB
L3 Cache:          4 MB
Memory:          8 GB
Processor Interconnect Speed:          5.86 GT/s
Boot ROM Version:          IM112.0057.B00
SMC Version (system):          1.64f5

Ok so it definitely appears to be the RAM. I have found a way to reproduce the crashing....Running Prime95. Its normally takes about 15-30min on the stresstest to get the system to lock up.
But here is the strange thing. It only seems to work if I have the full 8Gb installed.
I have run each 2Gb stick by itself without issues.
And then run 6Gb, changing the empty slot each time, and again no crashing.
I found the following thread also has similar issues, with the RAM the most likely cause.
https://discussions.apple.com/message/15610565#15610565
I can discount USB,wifi,bluetooth as I tried this and still managed to get a crash.
But I did have screen sharing on so I am now testing if I can run the 8Gb with this disabled.
Will report back with my findings.

MBA screen randomly freezes, locks up after upgrade to Mavericks

Sometimes my MacBookAir5,2 freezes, not allowing any input from the keyboard and trackpad (I don't use/have a mouse) except for the power key to force quit it. It happens AFAICT randomly, maybe while I'm browsing. In this case there're no crash reports or related messages in Console.app by the time it locks up.
Other times it freezes and WindowServer crashes and I'm logged out. For that you can check the reports below.
I don't know if both problems are related. This all started when I moved to effing Mavericks from Mountain Lion (which was pretty solid and I'd probably return to).
I reset the SMC a couple of times to no avail. Any hints as to what could be causing it or how can I further troubleshoot this problem?
Process:         WindowServer [115]
Path:            /System/Library/Frameworks/CoreGraphics.framework/Versions/A/Resources/WindowSe rver
Identifier:      WindowServer
Version:         599.35.6
Code Type:       X86-64 (Native)
Parent Process: launchd [1]
Responsible:     WindowServer [115]
User ID:         88
Date/Time:       2015-03-03 17:31:17.767 +0100
OS Version:      Mac OS X 10.9.5 (13F34)
Report Version: 11
Anonymous UUID: 46BFC04A-DCCF-C9EF-1783-978639D06941
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
abort() called
Application Specific Signatures:
Graphics hardware encountered an error and was reset: 0x00000000
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib         0x00007fff8b0f0866 __pthread_kill + 10
1   libsystem_pthread.dylib       0x00007fff8ecee35c pthread_kill + 92
2   libsystem_c.dylib             0x00007fff8ed50b1a abort + 125
3   libGPUSupportMercury.dylib     0x00007fff8c5521ca gpusKillClient + 111
4   libGPUSupportMercury.dylib     0x00007fff8c55365f gpusSubmitDataBuffers + 484
5   com.apple.driver.AppleIntelHD4000GraphicsGLDriver 0x0000123400362460 IntelCommandBuffer::getNew(GLDContextRec*) + 54
6   com.apple.driver.AppleIntelHD4000GraphicsGLDriver 0x000012340035ee3d GenContext::prepareCommandBuffer() + 23
7   com.apple.driver.AppleIntelHD4000GraphicsGLDriver 0x00001234003622d5 intelSubmitCommands + 201
8   com.apple.CoreGraphics         0x00007fff948d4001 CGXGLAccelFinish + 156
9   com.apple.CoreGraphics         0x00007fff9480addb CGXReleaseDisplayDeviceSurface + 197
10 com.apple.CoreGraphics         0x00007fff94add147 CGXUpdateDisplay + 8838
11 com.apple.CoreGraphics         0x00007fff94adadfd update_display_callback + 125
12 com.apple.CoreGraphics         0x00007fff94ba0dd3 run_timer_pass + 379
13 com.apple.CoreGraphics         0x00007fff94a5f0f9 CGXRunOneServicesPass + 164
14 com.apple.CoreGraphics         0x00007fff94a5f936 CGXServer + 807
15 WindowServer                   0x0000000107b92f96 main + 9
16 libdyld.dylib                 0x00007fff90cbb5fd start + 1
Process:         WindowServer [109]
Path:            /System/Library/Frameworks/CoreGraphics.framework/Versions/A/Resources/WindowSe rver
Identifier:      WindowServer
Version:         599.35.6
Code Type:       X86-64 (Native)
Parent Process: launchd [1]
Responsible:     WindowServer [109]
User ID:         88
Date/Time:       2015-03-21 21:23:17.429 +0100
OS Version:      Mac OS X 10.9.5 (13F34)
Report Version: 11
Anonymous UUID: 46BFC04A-DCCF-C9EF-1783-978639D06941
Sleep/Wake UUID: 96990396-5DED-467F-8D31-262C3C184DAE
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
abort() called
Application Specific Signatures:
Graphics hardware encountered an error and was reset: 0x00000000
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib         0x00007fff8936f866 __pthread_kill + 10
1   libsystem_pthread.dylib       0x00007fff8cf6d35c pthread_kill + 92
2   libsystem_c.dylib             0x00007fff8cfcfb1a abort + 125
3   libGPUSupportMercury.dylib     0x00007fff8a7d11ca gpusKillClient + 111
4   libGPUSupportMercury.dylib     0x00007fff8a7d265f gpusSubmitDataBuffers + 484
5   com.apple.driver.AppleIntelHD4000GraphicsGLDriver 0x0000123400362460 IntelCommandBuffer::getNew(GLDContextRec*) + 54
6   com.apple.driver.AppleIntelHD4000GraphicsGLDriver 0x000012340035ee3d GenContext::prepareCommandBuffer() + 23
7   com.apple.driver.AppleIntelHD4000GraphicsGLDriver 0x00001234003622d5 intelSubmitCommands + 201
8   com.apple.CoreGraphics         0x00007fff92b53001 CGXGLAccelFinish + 156
9   com.apple.CoreGraphics         0x00007fff92a89ddb CGXReleaseDisplayDeviceSurface + 197
10 com.apple.CoreGraphics         0x00007fff92d5c147 CGXUpdateDisplay + 8838
11 com.apple.CoreGraphics         0x00007fff92d59dfd update_display_callback + 125
12 com.apple.CoreGraphics         0x00007fff92e1fdd3 run_timer_pass + 379
13 com.apple.CoreGraphics         0x00007fff92cde0f9 CGXRunOneServicesPass + 164
14 com.apple.CoreGraphics         0x00007fff92cde936 CGXServer + 807
15 WindowServer                   0x00000001081eef96 main + 9
16 libdyld.dylib                 0x00007fff8ef3a5fd start + 1

I agree with Bob, run EtreCheck and post the results here.
A couple of questions. You mentioned resetting the SMC, have you tried zapping the PRAM? If not, you can do this by:
Shutting your Mac all the way down.
Restarting your Mac and immediately pressing the Command-Option-P-R keys simultaneously. Make sure you press the keys before the gray screen comes up.
Hold those keys down until your Mac reboots again and you here the startup sound.
Let go of the keys so your Mac reboots as per usual.
Also, how long after upgrading to Mavericks did this problem start?

Random freeze while browsing

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