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And double check if such a chain of events would be unrecoverable for us. So what we can do on our side is try Virtual Box on Lion with our drivers. This in turn could create trouble to other SW that relies on a responsive frame buffer (Virtual Box again?) and lock everything up. My best guess at the moment is that our USB discovery is falling over because of VirtualBox and this will bring down our screen while the DisplayLink frame buffer is still running. Given the amount of third party kexts you have (and 'optional' Apple ones) the first thing I'm thinking about is an SW interoperability issue. There is also a WindowServer issue at some point. The USB part is likely caused by VirtualBox, but the network could be VirtualBox or Tap or Synergy that is littering the log with errors. In particular the startup is quite worrying, if you look at your system profile in Logs->System.log starting at Jan 27 11:15:21 you can see errors of different kind, in particular network and USB.
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A very stable part of our driver falls over for some reason (this may be connected with the lock), another part is hanging (this is not going to lock, may be a side effect) and you have the most errors I've ever seen in a system log.
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I'm seeing many errors I've never seen before.
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