While executing a setdriver-command with the rpcclient smbd got signal SIGBUS
(10). This BUG is reproducible. 
REASON:
The reason is the following cast: 
source/printing/printing.c at line 1211 in function print_queue_receive
  ctx = (struct print_queue_update_context*)buf;
ctx and his members are misaligned and the next call 
  get_printer_fns_from_type(ctx->printing_type),
		ctx->lpqcommand );
results in the signal SIGBUS. The construct works under Linux but never under
Sparc-Solaris because structures must be 4 byte aligned.
SOLUTION:
--- samba-3.0.9/source/printing/printing.c.ori  2004-12-09 11:21:46.014043000 +0100
+++ samba-3.0.9/source/printing/printing.c      2004-12-09 12:10:03.946840000 +0100
@@ -1207,11 +1207,14 @@
                DEBUG(1, ("Got invalid print queue update message\n"));
                return;
        }
-
-       ctx = (struct print_queue_update_context*)buf;
+        ctx = (struct print_queue_update_context *)malloc(sizeof(struct
print_queue_update_context));
+       if(!ctx)
+               return;
+       memcpy(ctx,buf,sizeof(struct print_queue_update_context));
        print_queue_update_internal(ctx->sharename,
                get_printer_fns_from_type(ctx->printing_type),
                ctx->lpqcommand );
+       free(ctx);
 }

 static pid_t background_lpq_updater_pid = -1;

m.f.g.