dllhost.exe进程消耗内存解决方案

我发现每当我浏览（但并未播放）包含视频的文件夹（主要是MP4格式的视频），电脑的速度就会开始变慢，并且会越来越严重，即便关闭包含视频的文件夹窗口也不能阻止电脑的变慢。通过任务管理器发现每当开启包含视频的文件夹窗口时，总是会有一个dllhost.exe进程出现并不断地消耗内存，直到死机。如果在死机前通过任务管理器强行中止该进程则电脑立刻恢复正常，但是只要浏览包含视频的文件夹，dllhost.exe进程就会再次出现并且反常地无止尽地消耗内存。好像是在创建缩略图，但是却没有出现新的缩略图。同样的视频文件放在其他电脑上浏览则没有该问题。

百度了许久，终于看到如下方法：

Hello, Microsoft will not help you with this problem, but I will. I had the same problem, I solved it completelly and in 2 minutes:The problem appears when dllhost.exe attempts to create a thumbnail of an mp4 file,
but for some reason cannot complete the task, and starts reading the hard drive non stop and filling all phisical Ram, and starts using the swap file (virtual memory file wich uses hard drive space as ram memory), slowing down or freezing the computer.The
cause is probably an error in the integrated mp4 windows codecs.Anyway, the solution is to download and install a freeware program wich generates all video files thumbnails instead of windows. It even creates thumbails of flash (flv) files!You can download
it from this link:

http://www.free-codecs.com/Media_Preview_download.htm

Or googleing Media Preview 1.3.1.343After the installation is complete, simply enable all the video files thumbnail options and done.Problem solved. You do not even need to restart the computer.Before you install
it you should kill the dllhost.exe if it is running. After the installation, just open a folder or select a file to see the thumbnails generate quickly and without any problems.If you have the tasks monitor open, you will see the dllhost appear while the thumbnails
are being generated, and then it will disappear. It will never exeed 20.000kb.Done and done.I hope this helps anyone with the same issue.
http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/windows-7-dllhostexe-memory-leak/7147cdab-a29b-4277-9a33-04199095ca01