http://bugs.winehq.org/show_bug.cgi?id=18834
--- Comment #3 from pmacd@canada.com 2009-06-08 11:22:23 --- (In reply to comment #1)
Have you tested this on windows to ensure it's not a program bug?
I had not yet deliberately tested this on Windows to see if it is a program bug as my experience tells me this does not happen: The programs I am using to test are Hexagon, Carrara and DAZ Studio all by DAZ 3D. I am testing these programs as I use them regularly on Windows (XP and Vista). They are updated frequently and each installer will run vcredist_x86.exe automatically at the end of each install. My Windows winsxs folder remains intact and the programs continue to run on my Windows machine.
However, I just ran vcredistX86.exe on my windows system and nothing changed in my windows winsxs folder. Therefore, running vcredist_x86.exe repeatedly does not destroy the winsxs folder on windows as it does in wine.