I've seen this problem reported elsewhere, but I haven't found a solution. I'm reinstalling Windows 7 Professional SP1 from scratch on a Dell Precision M4600 laptop. Yesterday, I went through the entire process of installing the OS, the drivers and running system update. After that was completed, I ran Disk Cleanup, whereupon I noticed a random folder being created in AppData\Local\Temp, which is almost a duplicate of the DISM folder in Windows\System32. This folder got created when I selected the option to clean up system files.
To be certain it wasn't being caused by one of the drivers or system updates, I reinstalled the OS again from scratch and checked again. It was there immediately after the first boot, so I suppose it's being caused by an update in SP1. Any ideas how to fix it?
I attached dism.log and here is the contents of the folder: