Bug#623088: Upgrade to kernel seems to resolve problem
I noticed that under Squeeze this error message appeared every time I booted.*
May* 5 21:22:07 debian kernel: [*** 7.222495] ACPI: resource 0000:00:1f.3 [io* 0x1c00-0x1c1f] conflicts with ACPI region SMBI [io 0x1c00-0x1c0f]
I have updated to Wheezy kernel and this message no longer appears.* The bug also seems to have disappeared.* No log file flooding and system degrading, and no problems (so far) with rebooting, hibernating or sleeping.