--- src/sys/platform/vkernel/i386/trap.c	2007/01/22 19:37:04	1.14
+++ src/sys/platform/vkernel/i386/trap.c	2007/02/02 20:00:22	1.15
@@ -796,6 +796,16 @@ kernel_trap:
 		MAKEMPSAFE(have_mplock);
 		trap_fatal(frame, FALSE, eva);
 		goto out2;
+	case T_SYSCALL80:
+		/*
+		 * Ignore this trap generated from a spurious SIGTRAP.
+		 *
+		 * single stepping in / syscalls leads to spurious / SIGTRAP
+		 * so ignore
+		 *
+		 * Haiku (c) 2007 Simon 'corecode' Schubert
+		 */
+		goto out2;
 	}
 
 	/*