Every AV finds it to be a trojan/virus/spyware/younameit...
If F-Secure is enabled when I download it, the trainer is removed from the archive instantly.
I like to keep my AV on either way, it just sucks to DL the trainer again everytime I play ME2.
Other trainers I've got from CH are simply detected as "Harmful" and then an option is given to allow the program, which is good.
Create a folder named Trainers, put all the Trainers which otherwise get deleted/quarantined by your AV, and then add that folder to your exceptions list. This is what I do.
Download all your Trainers directly from the internet to that folder. If your AV scans it before allowing the connection, make sure you disable your AV momentarily so you can download it.
[Edited by HonestGamer, 1/21/2011 10:34:24 AM]