Has there been an IE7 Security Update that now prevents Winzip from opening
remote zip files? IE6 works okay, but IE7 we need to download the file
before we can unzip it.

This is particularly frustrating when we have zipped files on a remote
server. Each one needs to be donwloaded locally before we can open.

Just recently changed. Highest update in IE 6 that I have been able to
isolate is KB950749. All IE 7 users cannot open without downloading the zip
file first.