Sounds like you've opened something inside the folder, which is then using an explorer process on that open file.
That will prevent you from deleting the folder.
It's like a box with a piece of cake inside, and you and tied a piece of string to the cake, and the string is hanging outside of the box. You can't
throw the box away because the string keep getting caught on things... lamest explanation possible, but it involves cake so it works on some level.
Rebooting your pc should fix this.
I use a program called Unlocker (32 & 64 bit available) that can show you what process is locking a file from being moved, renamed or deleted. It can
schedule deletion/renaming/moving on the next boot if it's a system process you cannot kill. Google for it, it's handy to have if you get this a
But it's just a folder.. the guid represents what it contains as a system folder I guess.
edit on 23-11-2012 by winofiend because: (no reason