Command-Option-H not working to hide other apps

Question

Just got a new (refurbished) iMac, with 10.8.3 on it. Transferred everyting from my old iMac without a hitch. There's a weird thing happnening, however. Command-Option-H no longer hides others. It seems to cycle through open apps. But only some of them. So right now I'm in Crome and press the shortcut. It switches to the Finder (with everything else hidden). Then with the Finder up front, I press the keys again, and it goes to Calculator, and hides all the others. I press the keys one more time and nothing happens. But the thing is, I have several other apps open, and it doesn't cycle through those.
The machine is a 3.2 GHz Intel Core i5, with 10.8.3. I am using my old full-sized keyboard, with a wired mighty Mouse (didn't like the tiny Bluetooth keyboard it came with, nor the Magic Mouse).
I've searched and can't find a solution - heck, I can't even find anybody else having this issue.

Answer 1

I think I see some things I don't need to have running, like Adobe Version Cue CS2. Here's the full report – interpret away! Thanks!
Hardware Information:
          iMac (27-inch, Late 2012)
          iMac - model: iMac13,2
          1 3.2 GHz Intel Core i5 CPU: 4 cores
          8 GB RAM
Video Information:
          NVIDIA GeForce GTX 675MX - VRAM: 1024 MB
Startup Items:
          AdobeVersionCueCS2 - Path: /Library/StartupItems/AdobeVersionCueCS2
          ProTec6b - Path: /Library/StartupItems/ProTec6b
System Software:
          OS X 10.8.4 (12E55) - Uptime: 0 days 12:38:6
Disk Information:
          APPLE HDD ST1000DM003 disk0 : (1 TB)
                    disk0s1 (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) /: 999.35 GB (612.33 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
USB Information:
          Western Digital My Book 111A 2 TB
                    disk2s1 (disk2s1) <not mounted>: 32 KB
                    My Book (disk2s3) /Volumes/My Book: 1 TB (560.49 GB free)
                    Time Machine MyBook (disk2s5) /Volumes/Time Machine MyBook: 999.98 GB (620.97 GB free)
          Apple Inc. FaceTime HD Camera (Built-in)
          Apple, Inc. Keyboard Hub
                    Mitsumi Electric Apple Optical USB Mouse
                    Apple, Inc Apple Keyboard
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
FireWire Information:
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Kernel Extensions:
          com.Cycling74.driver.Soundflower          (1.6.2)
          net.telestream.driver.TelestreamAudio          (1.0.5)
Problem System Launch Daemons:
          [failed] com.apple.coreservices.appleid.passwordcheck.plist
          [failed] com.apple.coresymbolicationd.plist
          [failed] com.apple.wdhelper.plist
Problem System Launch Agents:
          [failed] com.apple.accountsd.plist
          [failed] com.apple.AirPlayUIAgent.plist
          [failed] com.apple.coreservices.appleid.authentication.plist
          [failed] com.apple.gamed.plist
          [failed] com.apple.printtool.agent.plist
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist
          [loaded] com.adobe.SwitchBoard.plist
          [loaded] com.barebones.authd.plist
          [not loaded] com.barebones.textwrangler.plist
          [loaded] com.google.keystone.daemon.plist
          [loaded] com.rogueamoeba.hermes.plist
          [not loaded] org.eyebeam.SelfControl.plist
Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist
          [loaded] com.adobe.CS4ServiceManager.plist
          [loaded] com.adobe.CS5ServiceManager.plist
          [loaded] com.google.keystone.agent.plist
          [loaded] com.wacom.wacomtablet.plist
User Launch Agents:
          [loaded] ws.agile.1PasswordAgent.plist
User Login Items:
          iTunesHelper
          Spotify
          Dropbox
          Snapz Pro X
          TextExpander 2
          Desktopple
          Cloud
          Google Chrome
3rd Party Preference Panes:
          A Better Finder Preferences
          Adobe Version Cue CS2
          BTTPrefs
          Déjà Vu
          Flash Player
          Flip4Mac WMV
          WacomTablet
Internet Plug-ins:
          AdobeAAMDetect.plugin
          AdobePDFViewer.plugin
          AmazonMP3DownloaderPlugin.plugin
          AmazonMP3DownloaderPlugin1017277.plugin
          Flash Player.plugin
          FlashPlayer-10.6.plugin
          Flip4Mac WMV Plugin.plugin
          googletalkbrowserplugin.plugin
          iPhotoPhotocast.plugin
          JavaAppletPlugin.plugin
          npgtpo3dautoplugin.plugin
          o1dbrowserplugin.plugin
          QuickTime Plugin.plugin
          Silverlight.plugin
          WacomNetscape.plugin
          WacomTabletPlugin.plugin
          Yahoo! Installer.plugin
User Internet Plug-ins:
          CitrixOnlineWebDeploymentPlugin.plugin
Bad Fonts:
          None
Top Processes by CPU:
              15%          firefox
               3%          WindowServer
               1%          Adobe Illustrator
               1%          Skype
               1%          EtreCheck
               1%          Google Chrome
               1%          Adobe Photoshop CS5
               1%          iTunes
               0%          fontd
               0%          DashboardClient
Top Processes by Memory:
          1.03 GB            Adobe Photoshop CS5
          836 MB             firefox
          238 MB             Adobe Illustrator
          213 MB             mds
          172 MB             Google Chrome
          149 MB             Google Chrome Helper
          139 MB             WindowServer
          131 MB             Skype
          131 MB             Finder
          66 MB              iTunes
Virtual Memory Statistics
          152 MB             Free RAM
          3.59 GB            Active RAM
          3.11 GB            Inactive RAM
          1.14 GB            Wired RAM
          4.14 GB            Page-ins
          819 MB             Page-outs