Windows 7 unzips all files as "encrypted" (not your fault... ;-) )

-- What steps will reproduce the problem?
1. Unzip the archive with the Windows 7 built-in unzipper

What is the expected output? What do you see instead?
Files should be listed as unencrypted.  Instead, they are unpacked with the 
"encrypted" bit and are colored green in the file listing.

-- What version of the product are you using? On what operating system?
Windows 7 x64 Ultimate

-- Please provide any additional information below.
It's not your fault!  It's a Windows bug...
http://social.technet.microsoft.com/Forums/en/w7itprogeneral/thread/7acea800-7ab
a-467e-aba8-9097e63f5e11
http://arstechnica.com/civis/viewtopic.php?f=15&t=1132273

Still, I wonder if there's any way to prevent it...

Original issue reported on code.google.com by yossi.oren on 28 Feb 2011 at 12:42

gorelick / fastdtw

Windows 7 unzips all files as "encrypted" (not your fault... ;-) ) #1