i'm on W7 64b, vox 1.1.5.8
i haven't other VC window openned.
this is not always VoxOSD blocking, it changes (VoxRecognisedOSD or something like that)
I have a lot of program running, I do not close any when I shutdown the computer.
(firefox,thunderbird, utorrent, skype, notepadd++ for the most common)
sometimes the computer turns off directly, but most of the time it crashes.