In the last month we have received 2 X50s and 1 G7500, shortly after updating them to ver 3.4.0-292042 all three of them would no longer power on, at all. All of them are/were going back on RMA. I was hoping that it was a fluke but it's happened to three devices in a row. The G7500 has already been replaced and so far is working fine. Has anyone else experienced this?