com.apple.qtkitserver CPU usage on OS X Lion I'm on Lion 10.7.3 and every now and then, com.apple.qtkitserver hogs my CPU @ 100% for a little less than a minute, especially when there's something happening on Finder. 
I know that QTKitServer is the Quick Look server, but it seems its generating files unexpectedly or something of the sort.

Does anyone have a fix?

Note: This started happening when I upgraded from Snow Leopard to Lion.
Normally this is due to unfinished/corrupted video files in your downloads folder. I am assuming this is the case for you.

This should solve the problem:


Open Finder an navigate to your downloads folder.
Right-click and select Show View Options. 
Untick Show Icon Preview.