* Fix for a potential controller hang condition (lockup error code 0XBC) seen during heavy I/O. * Fix for a server operating system hang condition encountered during IO stress tests, such as SQLIO. * Fix for a potential controller hang condition (lockup error code 0XAB) seen when controller is configured in Zero Memory Mode (no cache module installed) * Fix for potential data miscompare condition during error recovery in a RAID50/60 configuration. The error condition was only observed in a lab test environment. * Fix for an issue where logical erase feature in utilities such as ACU, does not completely erase a volume if write cache is enabled * Fix for a potential controller hang condition that may be seen when a 2nd SATA drive fails in a RAID 6 configuration.