diff -r 2cb0fb910441 src/lib-storage/index/maildir/maildir-uidlist.c
--- a/src/lib-storage/index/maildir/maildir-uidlist.c	Mon Mar 07 01:00:28 2011 +0200
+++ b/src/lib-storage/index/maildir/maildir-uidlist.c	Thu Mar 10 23:54:38 2011 +0200
@@ -539,6 +539,7 @@
 	} else {
 		/* This can happen if expunged file is moved back and the file
 		   was appended to uidlist. */
+		system(t_strdup_printf("/bin/cp %s /tmp/uidlist.%d.%d", uidlist->path, getpid(), (int)ioloop_time));
 		i_warning("%s: Duplicate file entry at line %u: "
 			  "%s (uid %u -> %u)%s",
 			  uidlist->path, uidlist->read_line_count, line,
@@ -1509,6 +1510,7 @@
 {
 	struct maildir_uidlist *uidlist = ctx->uidlist;
 
+	return TRUE;
 	if (!uidlist->locked_refresh || !uidlist->initial_read)
 		return FALSE;