My apologies. The previous patch is bogus. Here is a better one.
-Brandon
--- mainwindow-old.c 2010-04-16 09:53:13.000000000 -0700
+++ mainwindow.c 2010-10-24 02:28:16.000000000 -0700
@@ -643,8 +643,8 @@
{"Message/Mark/UnwatchThread", NULL, N_("Unwatch thread"), NULL, NULL, G_CALLBACK(unwatch_thread_cb) },
/* separation */
- {"Message/Mark/MarkSpam", NULL, N_("Mark as spam"), NULL, NULL, G_CALLBACK(mark_as_spam_cb) },
- {"Message/Mark/MarkHam", NULL, N_("Mark as ham"), NULL, NULL, G_CALLBACK(mark_as_ham_cb) },
+ {"Message/Mark/MarkSpam", NULL, N_("Mark as _spam"), NULL, NULL, G_CALLBACK(mark_as_spam_cb) },
+ {"Message/Mark/MarkHam", NULL, N_("Mark as _ham"), NULL, NULL, G_CALLBACK(mark_as_ham_cb) },
/* separation */
{"Message/Mark/Lock", NULL, N_("Lock"), NULL, NULL, G_CALLBACK(lock_msgs_cb) },
