diff -urp ltrace-0.5/sysdeps/linux-gnu/trace.c ltrace-0.5-pm/sysdeps/linux-gnu/trace.c
--- ltrace-0.5/sysdeps/linux-gnu/trace.c	2011-08-04 22:30:16.724120925 +0200
+++ ltrace-0.5-pm/sysdeps/linux-gnu/trace.c	2011-08-04 22:33:03.367663730 +0200
@@ -361,6 +361,8 @@ process_stopping_on_event(Event_Handler 
 	struct process_stopping_handler * self = (void *)super;
 	struct process * task = event->proc;
 	struct process * leader = task->leader;
+	struct breakpoint * sbp = self->breakpoint_being_enabled;
+	struct process * teb = self->task_enabling_breakpoint;
 
 	struct pid_task * task_info = get_task_info(&self->pids, task->pid);
 	if (task_info == NULL)
@@ -378,8 +380,9 @@ process_stopping_on_event(Event_Handler 
 	case psh_stopping:
 		/* If everyone is stopped, singlestep.  */
 		if (each_task(leader, &task_stopped, NULL) == NULL) {
-			if (ptrace(PTRACE_SINGLESTEP,
-				   self->task_enabling_breakpoint->pid, 0, 0))
+			if (sbp->enabled)
+				disable_breakpoint(teb, sbp);
+			if (ptrace(PTRACE_SINGLESTEP, teb->pid, 0, 0))
 				perror("PTRACE_SINGLESTEP");
 			self->state = state = psh_singlestep;
 		}
@@ -434,10 +437,10 @@ process_stopping_destroy(Event_Handler *
 
 void continue_after_breakpoint(struct process *proc, struct breakpoint *sbp)
 {
-	if (sbp->enabled)
-		disable_breakpoint(proc, sbp);
 	set_instruction_pointer(proc, sbp->addr);
 	if (sbp->enabled == 0) {
+		if (sbp->enabled)
+			disable_breakpoint(proc, sbp);
 		continue_process(proc->pid);
 	} else {
 #if defined __sparc__  || defined __ia64___
Только в ltrace-0.5-pm/sysdeps/linux-gnu: trace.c~