Another Bluescreen 
Overnight, waiting for me in the dock at home.
Powered up OK at the first site of the day.
Interestingly, LookOut was all freaked about something yesterday. There was no index, and manually rerunning the indexer lead to warnings and errors about shared memory, implying said memory was corrupt. I exited and restarted Outlook, then left the indexer running. This morning there was still no LookOut index; manually re-running the indexer seemed to fix that.