id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
399	Log files of acpica$ do not have time stamps.	ecsnl	eco	"Steve Levine also mentioned its useful feature to help understand where problem are with ACPI. 

With the different ACPI versions 3.15 debug builds my laptop sometimes would hang for a few seconds, including audio playback and then it would continue again.

It was most likely when it wrote this to the logfile it was stuck:
== End Exec EC 175 queue ==
== Beg Exec EC 175 ==
== End Exec EC 176 queue ==
== Beg Exec EC 176 ==
== End Exec EC 177 queue ==

It would be useful if the logs would contain something like this:
""2009.04.15 12:24:15"" and then debug output."	enhancement	closed	minor	Release version 3.19	ACPI PSD	3.15	fixed