May 15 10:01:41 mach_kernel: ADPT_OSI_IndicateQueueFrozen: id 4, freezeAs you can see, all those messages were written in the span of two seconds. My system.log file was over 5.5mb in size, and the system had backed up about six previous logs, all over 2mb in size. You can see these in the list as system.log.0.gz, system.log.1.gz, etc.
May 15 10:01:41 mach_kernel: ADPT_OSI_IndicateGenerationChange (nop)
May 15 10:01:41 mach_kernel: ADPT_OSI_IndicateQueueFrozen: id 4, unfreeze
May 15 10:01:42 mach_kernel: ADPT_OSI_IndicateQueueFrozen: id 4, freeze
May 15 10:01:42 mach_kernel: ADPT_OSI_IndicateGenerationChange (nop)
May 15 10:01:42 mach_kernel: ADPT_OSI_IndicateQueueFrozen: id 4, unfreeze
I deleted the backup log files, and will remove the drivers later tonight (see the Adaptec ReadMe for instructions on how to do so).
So if you've noticed some vanishing drive space, and have the Adaptec drivers installed, check your log files!

