Bitdefender changed the number servers supported part way though the purchase period. I purchased a 3 year license during one of their special sales. The license chosen was for 10 units but the license stated that it provided for 4 servers. I recently had one of my linux workstations die and when I bought up a replacement, I found I now only have a license for 3 servers. After long discussions with tech support, they did verify that I had in fact I had 4 servers active and protected under the license but according to their current rules, only 3 servers are allowed. According to them, even though I had 4 active servers they would not allow that anymore. Appears as a strange form of bait and switch.