Dock consumes 100% of CPU and fan runs.  What to do?

I have a 2010 MBP with SSD and VMWare (not Parallels).  Every so often, the dock cranks up to consume 100% of the CPU, and the fan runs.  The problem goes away when I reboot. I've tried quiting various applications, but it doesn't seem to make a difference (i.e. I cannot identify a rogue app that's causing this).  There are a lot of discussion threads on this problem with OS 10.6.8 and Parallels, but I'm running Lion 10.7.1 and VMWare (which I've shut down).
Any others have this issue?  Ideas for solution?

Small update: Despite my intelligence, good looks and vast experience I use Google sometimes. To my surprise this file turns out to be a Windows one. Here is someone who is much happier, and since it is some way in my line of thinking I'll quote it, but you might take my previous advice as well:
http://forums.techarena.in/windows-vista-performance/1012315.htm
"- Open up msconfig.exe > Manage startup programs.
- Disable ALL Realtek entries
- Close msconfig.exe
- Right-click on the speaker icon > Audio devices > Speakers (properties)
- Go to the enhancements tab
- Check the box to disable all audio enhancements
- Close the menu
- Right-click on the speaker icon > Recording devices
- Disable all your microphones (yeah..., the actual problem seems to come
from voice inputs rendering..)
- Close the menu
- Restart your computer"

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      AdBlock-2
      HoverZoom
      Facebook Cleaner (Disabled)
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    Audio Plug-ins: ?
      BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
      AirPlay: Version: 2.0 - SDK 10.9
      AppleAVBAudio: Version: 203.2 - SDK 10.9
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      Auto backup: NO - Auto backup turned off
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          2% WindowServer
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      1.38 GB Inactive RAM
      421 MB Wired RAM
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