From time to time our customers say us that end users who have Norton Antivirus 2008 installed experience difficulties with Image Uploader. I have googled a bit and found out that Symantec released an update in this March which added Image Uploader to a list of suspicious software:
http://www.symantec.com/avcenter/security/Content/2008.03.04.html
It sounds like they read the news about vulnerabilities in Image Uploader and decided to block the control just in case. The worst thing is that perhaps they do not care about CLSID or version number. They use signature-based detection instead. This way Norton software will block not just vulnerable old ActiveX, but new safe version as well.
We will try to find some solution, but meanwhile I see two workarounds:
1. Give instructions to customers how to enable our upload component. Like guys from Smugmug did (big thanks to them):
http://wiki.smugmug.net/display/SmugMug/Configure+Norton+to+Allow+Aurigma+Simple+Uploader2. Allow users to choose alternative way to upload photos through Java version.
Follow Aurigma on Twitter!