Purchased AVG Internet Security Suite, the "Iron clad security that does't slow your system down". Slowed my system to a crawl. This is a 4 G Vista system. Program was constantly scanning. Despite the scheduled scans, it scanned constantly. Shut the scan down, it would start again. Over two week period I have emailed the 24/7 support center four times. All I received was a computer generated msg acknowlegeing my email, not a word from a real human. Buyer beware! If you have a problem, you have no, nada, zero support!