I don't have it on my laptop. I thought the mfg put it there with all the cab files for when you are updating your computer, so that you don't need the cd.
You could tell your virus software to not scan it, though.
Windows update doesn't put it there. Unless they JUST started that whick I double cause that a very large folder. dglienna is right about the manufacturer putting it there. I do the same with all my computers so i don't need the cd. Just makes it easier to update things.
I am thinking of writing up an extensive list of files/folders that are safe to delete in order to increase the available amount of free space. I will certainly add those to the list. I'd always thought those were necesary in the event of an additional security patch.
I just installed MSDE (SQL Server) which isn't running quite right, but I just checked the windows folder and found 46 folders/apps. Here is a picture before they were toasted.