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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

iMac - My Mac is Going Really, Really Slow


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Endlessly91

 
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So a few weeks ago, my iMac started going very slow. I purchased it in December 2006 and up until a few weeks ago (late April) it has been my favorite computer. However, for the past few weeks, much to my dismay, it has been acting like a virus-ey PC. It has become extremely frusturating because doing just a simple task now takes much longer than it needs to do.

A few examples of what has been happening. If I'm on the internet, and I click on the URL bar to begin typing a URL, my cursor often freezes and turns into the "loading" cursor (that spinning thing) for 10-15 seconds before allowing me to proceed. The same thing happens when I click links. I listen to a lot of music and watch a lot of videos on my computer, and ever since this problem started, all videos and music keep on freezing every 5-10 seconds. It's impossible to listen to a full song without it sounding like I'm listening to a scratched CD. Whenever I turn the computer on, it displays a blank desktop and the loading cursor for several minutes before my desktop items, toolbar and regular cursor. That's exactly how all of my crappy PC's used to act.

There are many other things that happen, but you pretty much get the picture that for some reason, the best computer I've ever had has been going really slow. Most Google searches I have done on slow Mac's have lead me to believe that I may be low on RAM, but I still have over 120GB available.

Now, I download a lot of music on my Mac. Not from P2P Programs like Limewire, but from sites such as Megaupload, Rapidshare, etc. Taking that into consideration, I realize that it's very possible that I may have some sort of virus or spyware, but I've read that there's very little (if any) viruses for OS X.

I'm not very good with computers at all, so if someone could possibly point me in a direction to save my Mac and return it to normal, it would be much appreciated.
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Tahiti1028

 
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What OS are you running? RAM is not the same as HD (hard drive) space... you should have at least 512 MB. Click on the Apple in the upper left corner of your screen => about this Mac. A screen should come up displaying your system specs... look under memory (RAM) and if that number is below 512 MB, then that might be the problem.

My iMac: 1.6 GHz PowerPC G5, 2 GB (2x1GB) Kingston RAM, 80 GB ATA Hard Drive, DVD-ROM/CD-RW Combo Drive, 17" LCD Display, NVIDIA GeForce FX5200, Mac OS X 10.5 Leopard
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Endlessly91

 
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Oh, I see. Thanks for pointing out the difference.

Well, under Memory it says I have 1GB.
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Hmmm... I don't really know what could be the issue then. What OS are you running?

My iMac: 1.6 GHz PowerPC G5, 2 GB (2x1GB) Kingston RAM, 80 GB ATA Hard Drive, DVD-ROM/CD-RW Combo Drive, 17" LCD Display, NVIDIA GeForce FX5200, Mac OS X 10.5 Leopard
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Os X 10.4.10
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Quote:
Originally Posted by Endlessly91 View Post

I'm not very good with computers at all, so if someone could possibly point me in a direction to save my Mac and return it to normal, it would be much appreciated.
Use Disk Utility to Repair Permissions / Verify disk and also, try running the maintenance scripts.

What are the specs of you iMac? (processor speed, screen size)

As mentioned before, the more ram, the better.
For the year you mention, it'll probably be 3 GB max for the ram. Consider maxing out the ram for maximum performance.

Try Mainmenu for cleaning up your system. Even some of the procedures I described, can be done thru it.

Use Software update and check for updates.

When all else fails, try everything!
The Rep System and you.
Life's a joke...If you're not laughing, then you didn't get it.

June 2008

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We should make a sticky out of this, but here is my oft posted recipe for speeding up a Mac that is slowing. Work through this methodically and you should recover your speed:

First, check that your processor is running full speed. In Tiger at least, go to Preferences, Energy Saver, Options and look at the drop box down near the bottom called Processor Performance. If it is not set to "Highest", set it to that right away. This maximizes performance, but for notebooks, it may run down the battery faster. Note that not all Macs have this setting - my certainly my PowerMac G5 tower does, but not all Macs do. For Leopard, the preference panel is a bit different in this regard, but poke around and make sure that you are set up for optimum performance, not optimum battery life.

Next, for Intel Macs, fire up Activity Monitor and check for any processes running that are PPC not Intel (this is shown in one of the rightmost columns of the Processes display). If you are routinely running a background process of perhaps even a widget that is PPC, that process is running under Rosetta and that is consuming more CPU. You might wish to upgrade it to a Universal Binary, or replace it with something else.

Next, download OnyX and run the complete set of clean up and maintenance scripts and then evaluate again. Get OnyX at:

http://www.titanium.free.fr/pgs/english.html

Next, you may wish to check that you have enough free space on your hard drive. Highlight the Macintosh HD icon on your desktop, CTL-click it and select Get Info from the resulting menu. Make sure you have a reasonable amount of space left. If not, a little spring cleaning may be in order.

There are two excellent apps for showing where all of your hard disk space has gone, Disk Inventory X and WhatSize. Get them at:

Disk Inventory X: http://www.derlien.com

WhatSize: http://www.id-design.com/software/whatsize

Both do a great job at letting you zero in on your largest disk space consumers, so that you can hunt down any rogue files (and both are freeware, which is good).

Finally, it is possible you may have some processes running that are consuming a lot of idle CPU, thus slowing down your machine overall. I had a bad widget that did this once. Open Activity Monitor and look at your "resting" CPU occupancy when you are not doing anything in particular with the machine. It should be pretty much zero (maybe 1% to 2% at most). If it not, identify the process or processes that are taking the time. What are they? Do you recognize them? Are they needed?

If you find one that is not needed, kill it and see how your machine starts to behave. If this is the cure, you will need to identify the startup item that launches it and delete it.

So, in summary then, take the following steps in order:
1/ Start with ensuring that your processor speed setting is full (applies to many Macs but not all)
2/ For Intel Macs, check for PPC processes and potentially prune them out
3/ Do Onyx based full maintenance
4/ Check that you have sufficient available disk space
5/ Search for processes that are consuming an unexpected amount of CPU

A final thought. If you routinely leave your web browser running when you are not using it, and have it open at a "busy" page like Mac-Forums, you will find that the Flash-based animated ads on the page consume a ridiculous amount of CPU time. If you want to leave your web browser loaded and running all the time, try pointing it a peaceful page like Google's basic search page - no ads, no unusual CPU consumption. This may help as well.

My Macs: iMac 27" 3.4 GHz, Mac Pro 3.2 GHz, PowerMac G5 Quad 2.5 GHz, G4 Cube with 1.2 GHz Upgrade
My iStuff: 64GB iPhone 5, 64GB iPad4, 30GB iPod Video, 16GB iPod Touch
My OS': Mac OS X Lion, Mac OS X Snow Leopard, Mac OS X Tiger, Mac OS 9.2.2, openSUSE 10.3
I was on the Mac-Forums honor roll for September 2007
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