I'm using an Adaptec 2906 SCSI card for my external zip drive, and with the update to OS10.1 I am getting several writes per second to the /var/log/system.log file of the following form:
Sep 30 04:18:40 localhost mach_kernel: ADPT_OSI_IndicateQueueFrozen: id 6, freeze
Sep 30 04:18:40...