Well, for one thing, 4 GB is an absolute minimum - running Aperture efficiently, you should really have double that. You might want to check Activity Monitor (Applications > Utilities) and check how much memory apps are using - post a screenshot of the high usage "offenders". Also, check at the bottom of the window under memory - can you post a screenshot of that part please.
And, how much empty hard drive space do you have/maintain?
My guess would be that you've got a bunch of crap third-party software installed. That is mostly based on the fact that you have one of the most reviled apps in Mac history installed: MacKeeper. It is well-known for bringing a healthy Mac to its knees and even damaging systems to the point that they need reinstalling. Get rid of it, and then go through all your other third-party software with a fine-toothed comb. You'll find some suggestions as to how to do this, as well as some other tips, in my Mac Performance Guide:
The high usage offenders are :
Safari (176.6 MB)
Safari Web Content (175.5 MB)
Mail (121.0 MB)
Finder (51.9 MB)
Nothing else comes close. CPU usage very low, alhtough I don't have Aperture running right now. Here's a shot of the system memory portion:
I although I hear the others saying MacKeeper is a very likely cause for some of this, I didn't download MacKeeper until I began to experience problems. Additionally, I only have 4 GB Ram on my iMac at work and Aperture works just fine.
Thanks for any help you all give continue to give.
Okay, if you like MacKeeper, it's your decision. I would not let it within 20 ft of any of my Macs.
As for the RAM, your screenshot does not show. You need to use the little camera icon in the toolbar to post the picture.
And, as for Aperture, most posts I've read report needing more RAM for it, but - again - if it works for you, great. I'd still like to see the screenshot of your memory usage.
Make absolutely certain all vestiges of MacKeeper are really gone.
To help identify other third party software that may be to blame, also consider the following. It may reveal something useful, or nothing at all, but is easy enough to do.
Apple Support Communities contributor etresoft wrote a very useful app to quickly gather certain system information that may help point to a cause of this problem. Go to his website, download and run EtreCheck:
Don't be concerned about anything that says "Problem" or "failed".
Copy and paste its output in a reply.
Etrecheck was designed to remove any personal information (such as your computer's name and serial numbers) but if you see anything that looks like an email address or any other personal information that should not be divulged to others, please delete or obscure that information when you post the reply.
When you are finished with EtreCheck, quit the program. It occupies very little space, and you can keep it or drag it to the Trash as you wish.
So I downloaded and ran etrecheck's softare and this is the result:
iMac - model: iMac12,2
1 2.7 GHz Intel Core i5 CPU: 4 cores
4 GB RAM
AdobeVersionCueCS2 - Path: /Library/StartupItems/AdobeVersionCueCS2
HP Trap Monitor - Path: /Library/StartupItems/HP Trap Monitor
ProTec6b - Path: /Library/StartupItems/ProTec6b
OS X 10.8.2 (12C60) - Uptime: 0 days 15:44
ST31000528AS disk0 : (1 TB)
disk0s1 (disk0s1) <not mounted>: 209.7 MB
Macintosh HD (disk0s2) /: 999.35 GB (627.43 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
OPTIARC DVD RW AD-5690H
Western Digital My Book 1110 804.4 MB
disk2s0 (disk2s0) <not mounted>: 700.4 MB
disk2s0s1 (disk2s0s1) <not mounted>: 32 KB
WD SmartWare (disk2s0s2) /Volumes/WD SmartWare: 237.5 MB (Zero KB free)
Apple Computer, Inc. IR Receiver
Apple Internal Memory Card Reader
Kingston DataTraveler G3 4 GB
NO NAME (disk3s1) /Volumes/NO NAME: 4 GB (3.65 GB free)
Western Digital My Book 111A 3 TB
disk1s1 (disk1s1) <not mounted>: 209.7 MB
My Book (disk1s2) /Volumes/My Book 3: 3 TB (1.04 TB free)
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. FaceTime HD Camera (Built-in)
com.logmein.driver.LogMeInSoundDriver Version: 1.0.0
com.Cycling74.driver.Soundflower Version: 1.5.3
com.taoeffect.ispy.kext Version: 2.0.1
com.sophos.kext.sav Version: 8.0.4
Problem System Launch Daemons:
Problem System Launch Agents:
[not loaded] com.logmein.logmeinserver.plist
[not loaded] com.adobe.AAM.Updater-1.0.plist
[not loaded] com.logmein.logmeinguiagent.plist
[not loaded] com.logmein.logmeinguiagentatlogin.plist
User Launch Agents:
User Login Items:
Rogue Amoeba Schedule Helper
3rd Party Preference Panes:
Adobe Version Cue CS2
Adobe Version Cue CS3
Flip4Mac WMV Plugin.plugin
User Internet Plug-ins:
Google Earth Web Plug-in.plugin
25.6 % WebProcess
6.3 % mds
6.0 % WindowServer
4.5 % Safari
4.1 % activitymonitord
2.4 % ubd
1.6 % InterCheck
1.3 % smb-sync-preferences
1.2 % Finder
0.9 % syslogd
Thanks to whomever it was that edited the screen shot with my real name in it. Now that MaKeeper has been uninstalled, I do notice a marked difference in the performance of the machine. I'm not quite ready to say this was the sole cause and it's all fixed because decreased performance was one the reasons I succumbed to the MacKeeper draw in the first place. I think I'll work with the iMac for a few days and see how it goes.
I cannot say thank you enough to all you folks who have been working with me on this issue. You've been patient and kind, not snippy at all.
Lemme know if that system info from the etrecheck software reveals anything I shouuld know.