--- linux-2.4.26/include/asm-i386/i387.h.signal-race	2004-06-14 09:58:10.000000000 +0200
+++ linux-2.4.26/include/asm-i386/i387.h	2004-06-14 17:05:32.000000000 +0200
@@ -35,7 +35,7 @@
 
 #define clear_fpu( tsk ) do { \
 	if ( tsk->flags & PF_USEDFPU ) { \
-		asm volatile("fwait"); \
+		asm volatile("fnclex; fwait"); \
 		tsk->flags &= ~PF_USEDFPU; \
 		stts(); \
 	} \