--- linux-2.5.19/arch/i386/kernel/io_apic.c.orig	Fri Jun 14 17:43:20 2002
+++ linux-2.5.19/arch/i386/kernel/io_apic.c	Fri Jun 14 17:42:23 2002
@@ -251,7 +251,7 @@
 	irq_balance_t *entry = irq_balance + irq;
 	unsigned long now = jiffies;
 
-	if (unlikely(entry->timestamp != now)) {
+	if ((entry->timestamp != now) && (smp_num_cpus > 1)) {
 		unsigned long allowed_mask;
 		int random_number;
 
Linus, please apply.
Regards,
	Zwane Mwaikambo
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