diff -urNp linux-2.4.20/include/asm-i386/i387.h linux-2.4.20.SUSE/include/asm-i386/i387.h
--- linux-2.4.20/include/asm-i386/i387.h	2002-08-03 02:39:45.000000000 +0200
+++ linux-2.4.20.SUSE/include/asm-i386/i387.h	2004-06-15 09:38:14.715131119 +0200
@@ -34,7 +34,7 @@ extern void kernel_fpu_begin(void);
 
 #define clear_fpu( tsk ) do { \
 	if ( tsk->flags & PF_USEDFPU ) { \
-		asm volatile("fwait"); \
+		asm volatile("fnclex ; fwait"); \
 		tsk->flags &= ~PF_USEDFPU; \
 		stts(); \
 	} \
diff -urNp linux-2.4.20/include/asm-x86_64/i387.h linux-2.4.20.SUSE/include/asm-x86_64/i387.h
--- linux-2.4.20/include/asm-x86_64/i387.h	2004-06-15 09:36:39.948011696 +0200
+++ linux-2.4.20.SUSE/include/asm-x86_64/i387.h	2004-06-15 09:37:51.037851293 +0200
@@ -33,7 +33,7 @@ extern int save_i387(struct _fpstate *bu
 
 #define clear_fpu( tsk ) do { \
 	if ( tsk->flags & PF_USEDFPU ) { \
-		asm volatile("fwait"); \
+		asm volatile("fnclex ; fwait"); \
 		tsk->flags &= ~PF_USEDFPU; \
 		stts(); \
 	} \