I used to use PopFile for spam filtering and it was great in that every time you told it to reclassify an email it had marked as spam (or not spam) it learned from the act. After a couple weeks it grew to be EXTREMELY accurate in determining what was spam and what was not. Unfortunately, it was also very slow and tended to time out. That's why I started using Smart Security's spam filtering. I had thought that when I select an email message that had not been filtered and selected "Reclassify selected message as spam" that ESET would learn from this and become more accurate. But that doesn't seem to be happening. Is it supposed to learn? If not, then there's no point in reclassifying spam that's missed. Just delete it and be done with it.