Hi Ron When i replaced the motherboard of my L400 it became a Inspiron 2100! so same board with a different DMI string. The same thing also happened with a toshiba laptop with a different chipset so i don't think the bug is specific to this make/model. Things i tried without success 1)modprobing battery and power_supply made no difference 2)rebuilding 2.6.23 kernel with a custom dsdt made no difference 3)rebuilding 2.6.23 with the ACPI modules built in made no difference 4)rebuilding the 2.6.23 kernel with deprecated /proc/acpi/ made no difference Just the act of rebuilding a kernel is enough for the laptop to overheat, even sitting on top of a fan belonging to another box! Ended up upgrading a nice, big, fast dell server to fc8 and compiling the 2.6.24 kernel from rawhide on it (--target=i686) and changing all the 64bit=y &c then installing it on the lappie which made it all better. Never had to compile a kernel before, necessity being the mother of invention and that. I have updated the bugzilla report severity to high. /me hoping that the released version of 2.6.24 doesn't break things again mike -- This is an email sent via The Fedora Community Portal https://fcp.surfsite.org https://fcp.surfsite.org/modules/newbb/viewtopic.php?post_id=224601&topic_id=47985&forum=10#forumpost224601 If you think, this is spam, please report this to webmaster@xxxxxxxxxxxxxxxx and/or blame mikie.simpson@xxxxxxxxxx