dllhost.exe (COM Surrogate) consumes all CPU memory

Let me mention at the outset that I am an intermediate Windows user.

I do not know the what-how-why of Windows registry values. Windows Task Manager is what I use to keep a watch on different processes running on the computer.

Lately, I have started encountering this problem of dllhost.exe (sometimes only one instance, other times multiple instances) gobbling up my computer's entire CPU memory resulting in a crash/error message. After reading many articles online on possible solutions, I've installed two Sysinternals utilities - Process Explorer & Process Monitor.

However, I am a newbie as far as these two softwares are concerned and it will take a while in understanding to use them to figure out what is causing the dllhost.exe CPU gobble-up problem. Besides, all the technical stuff - processes>threads>dlls, registry values etc. scares me.

I'd really appreciate if someone can help me figure out and fix the dllhost.exe problem.


Symptom
1. dllhost.exe starts hogging CPU memory when I browse/watch/view jpegs, media files (.mp4 etc.). At times there is only one instance of dllhost.exe, other times there are multiple instances.






Hunch
1. Problem seems to arise when I browse/watch/view jpegs, media files (.mp4 etc.)
2. It seems the problem might have a connection with 3D video files

What I have tried/done till now to resolve the problem
1. Run sfc /scannow command (System File Checker) in the command prompt several times. It says everything is in order.
2. Have up-to-date virus, malaware definitions of Microsoft Security Essentials & Malwarebytes Anti-Malware. Run full system scan with both multiple times, they did not find anything suspicious, scans come clean.


Please tell me what to do to fix the problem. I can share log files of different softwares, utility tools if that will help diagnose the problem. I hope this is not a virus/malaware/trojan disguised as a legitimate process. It has been an unnerving 2-3 days since the problem cropped up. Help!

If you notice the problem, look in task manager for mobsync.exe. I had issues with it. But it was more troublesome in Vista than Windows Seven. It seems to exist in order to make every media file on the system available to WMP. Sort of like a file indexer for media files.

Another possibility is if you have your Lan set to share media files over the network with WMP. Same type of thing. It searches every drive on your system looking for media files.

Please post back if you see evidence of either of the above.

If nothing shows up regarding mobsync then as a last resort see this:
COM Surrogate Error - Microsoft Community

btw on Vista I fixed the disk hogging CPU eating problem by using a program that killed mobsync.exe every time it tried to start.