--- a/drivers/acpi/blacklist.c	2006-06-26 08:32:21.000000000 +0200
+++ a/drivers/acpi/blacklist.c	2006-06-26 08:32:59.000000000 +0200
@@ -78,6 +78,10 @@
 static int __init blacklist_by_year(void)
 {
 	int year = dmi_get_year(DMI_BIOS_DATE);
+
+	if (efi_enabled)
+		return 0;
+
 	/* Doesn't exist? Likely an old system */
 	if (year == -1) 
 		return 1;