This was a coin toss between here and the virtualization forum, but I didn't want to hear from the windows folks. I currently use VB 4.3.10 and its smooth as can be. I am hesitant to upgrade when its running so well, but I thought I would ask while I consider the change. The claim is that USB support has been improved and I am wondering if they are handling USB3 properly yet That is a biggie for me because true 3 support has not been there. Not a deal breaker, just a major disappointment because the speeds are so much slower. fyi -- both the host OS and all VM's are linux (no windows anywhere). So, any feedback on 4.3.16 while utilizing Linux would be appreciated.