diff -upN reference/arch/i386/kernel/io_apic.c current/arch/i386/kernel/io_apic.c
--- reference/arch/i386/kernel/io_apic.c	2004-04-30 12:57:47.000000000 -0700
+++ current/arch/i386/kernel/io_apic.c	2004-05-01 18:09:15.000000000 -0700
@@ -401,7 +401,7 @@ static void do_irq_balance(void)
 	unsigned long move_this_load = 0;
 	int max_loaded = 0, min_loaded = 0;
 	int load;
-	unsigned long useful_load_threshold = balanced_irq_interval + 10;
+	unsigned long useful_load_threshold = balanced_irq_interval / 10;
 	int selected_irq;
 	int tmp_loaded, first_attempt = 1;
 	unsigned long tmp_cpu_irq;