In frame 3 of the Coral Sea 2009 scenario (yesterday, Saturday, Aug. 8), we had two incidents of mass "white screen of death" crashes. This resulted in 58 disconnects out of about 160 players. Usual number of disconnnects for a scenario is about 6-10 for that many players.
These "white screen of death" crashes are not normal disconnects (where the connection is simply lost and the AH front end software complains of lost connectivity), but a crash to a full-screen window that is solid white, followed by a Windows message asking if you want to send an error report.