We have root caused the stability problem with latest kernels and FW83 (LION platform). The following patch (based on 2.4.17) fixes the problem. Please let me know if you still see a problem after applying this patch. Thanks, Asit <> --- /home1/src/linux/include/asm-ia64/spinlock.h Wed Jan 9 19:25:05 2002 +++ linux/include/asm-ia64/spinlock.h Wed Jan 23 15:52:45 2002 @@ -84,7 +84,7 @@ "mov r29 = 1\n" \ ";;\n" \ "1:\n" \ - "ld4.bias r2 = [%0]\n" \ + "ld4 r2 = [%0]\n" \ ";;\n" \ "cmp4.eq p0,p7 = r0,r2\n" \ "(p7) br.cond.spnt.few 1b \n" \