The current version of BlackICE Defender (2.9.caq and 2.9.cap) running on a Windows 2000 machine can be remotely crashed using a very basic ping flood. This has been tested with Divine Intervention 2 & 3, Sisoft Sandra Network (LAN) benchmark. Setting the packet size to about 10,000 bytes causes a Blue Screen of Death (or immediate system reboot). After extensive correspondence with ISS support they basically told me they'd "look into it." They have not responded since 12/21/01 and their newest patch 2.9.caq (released after) does not address this issue. More details available if requested.