I've been using Unidesk since January or so, and it's been an amazing product. I wish VMware would buy them up. It's super easy to use. I'm only using it for 20 desktops, and all my other desktops are just regular floating pools in VMware. There are a few things to be aware of when using it though. Once you set the amount of space someone has, that's it. You can't increase it, you have to make them a new desktop and transfer over all of their data (I had to do this on Friday). In some future release I think they'll fix that, but for now, beware of that. Something in the newest release, which I like, is that when someone logs off or restarts, it'll apply your updates. In previous versions, they have to have been logged off for 10 minutes before it would apply any new updates you made, which made it a little difficult since a lot of my users stay logged in.
I haven't run into any issues with a program not running in it yet. It's a million times easier than using Thinapp, because you're installing the whole application into a layer. When you need to update, it's updating like you normally would. Assigning layers to each user is just a few clicks, and they have the packages that you want them to have. For us, it's mainly people who have basic applications, and those who have accounting applications, so we don't have a ton of stuff layered. It's nice that i'm also able to allow my users to install some personal programs that stay with them every time I update.
