5.5/i386 acpitz0: _AL0[0] _PR0 failed

I just upgraded a friend's somewhat geriatric i386 box from 5.4-release to 5.5-release. On 5.5 the console is getting spammed with acpitz0: _AL0[0] _PR0 failed. This didn't happen with 5.4, or for that matter, any previous version of OpenBSD that's been on it that I can remember. dmesg follows:

Re: 5.5/i386 acpitz0: _AL0[0] _PR0 failed

Hi Shawn, This report needs more information. First, could you upgrade to -current and see if the behaviour is preserved? Second, please share the acpidump on that machine, the apm performance adjustment mode, the present fans and their status when this happens. Thanks for the report, Paul