Created attachment 233414 [details] last messages visible on screen during power off My computer hangs from time to time (~1/5) when I try to power it off. The last message is "mps0: Completing stop unit for xpt0:mps0:0:4:ffffffff". Details are visible in the attachment. Hardware: motherboard Tyan S7010, CPU(s): Dual Xeon X5690, hba: LSI/Broadcom/Avago 9212-4i4e, flashed to the latest firmware and working in IR mode. Two drives attached to the controller are SSDs, and one is HDD.