I've seen problems, but as I say, I used it only on IDE disks. Although IMHO, some problems were due to locking and had to do with the network card. I'm sorry, but I don't remember the details. It may stay up for a year, I don't know; I'm just saying that the longer is the uptime, the more scared I get (because, IMHO, the sooner it's going to fail). Of course, I'm not saying that Ken's is not reliable. In fact, I consider fossil and venti reliable as well.