This post is very similar to https://www-secure.symantec.com/connect/forums/app..., which has been locked and tagged as "solved". However, I don't quite understand how "do not use this software" can be marked as a solution, hence this new post.
We have in our company some executables that:
* are available on network shares and executed from that place
* requires admin rights, so prompt for UAC
* are less than 300kB
* takes tens of seconds to just prompt for the UAC, usually like 40 seconds but sometimes up to 3 minutes
The very same file, once copied on the local drive, is run in less than a second. When on the network share, 40 seconds. When all modules from SEP are deactivated (Auto-protect, Download Insight, SONAR, IPS, ...), still 40 seconds. After uninstalling SEP however... it comes back to an instant execution.
We are using RU1.