Yep - 2-3 times. It's pretty frightening when it first happens but it (usually) soon clears up; well, it did in my case. My doc didn't prescribe anything and although I had a couple of days off work my AME wasn't concerned. I believe the symptoms can vary. Mine were the same each time - room spinning when laying in bed. Standing up I was OK. A colleague had it and his symptoms were worse when upright; he couldn't drive as each time he turned his head everything went bananas and he suffered bad "seasickness". Again, it cleared up fairly rapidly.