No. This problem exists with absolutely clean installs.
For the record, my drive does not spontaneously eject. The problem is sleep. The LaCie interface essentially pulls the plug on the drive when going to sleep.
However, there was a goo workaround for the issue if I just selected "Put hard disks to sleep when possible"...that is, up until the 10.9.2 update. Now any drive I have attached to the LaCie Thunderbolt-eSata adapter gives an error that it's been ejected improperly upon wake
Even if I eject the volume, then sleep, I still get the "ejected improperly" error when I wake the machine, which I find particularly odd. The only thing I can do is eject the volume, then power it down.
I thought I had another workaround. There's an app called Jettison that kind of works. It's an ugly solution to have to purchase an app, but Jettison ejects all volumes before sleeping, then remounts them upon wake. Seems like the operating system could do this, too. The problem with Jettison is that it continually asks me to re-authenticate with my Apple ID, which is kind of a deal breaker, because it doesn't launch whenever I switch users, asking for my authentication every time.
Technically, I suppose this si LaCie's design flaw, but FOR THE LOVE OF GOD.....WILL YOU PEOPLE AT APPLE FIX THIS!!!!!!