There is an ongoing problem with attachments getting stuck in the queue of the antivirus scanner for days. For example:
http://forums.adobe.com/message/2080837#2080837
http://forums.adobe.com/message/2085171#2085171
1. Is this a known issue?
2. What is the maximum time for an attachment to be scanned? Anything more then how many minutes is an indication of a problem?
3. What can end-users do to mitigate this problem? For instance, are certain image formats more likely to get stuck then others?