I have had a few of them myself. Over the years I have noticed that it depends on the type of hosting I offered. When I was trying to compete on price with all the budget hosting companies I had alot of them. Their attitude was if they didn't get their way or have me redisign their website for free on their 1.99/M account they would go somewhere else. I actually had a customer call me repeatedly demanding that when their coworker designed their website using GoLive it looked great on their computer but when they put it on my servers it looked like crap, and I needed to redesign the site for free or they were going to sue me for their 1.99 + 5,000.00 for the copy of GoLive they bought and the 2 weeks it took them to make the site. As my prices rose over the years (due to changing companies) I have noticed that the amount of this type of customer has dropped to nearly zero.