--- sylpheed-1.0.6/src/imap.c.orig	2005-12-31 12:59:37.000000000 +0100
+++ sylpheed-1.0.6/src/imap.c	2005-12-31 13:01:27.000000000 +0100
@@ -2327,6 +2327,11 @@
 	    folder->ns_others   != NULL ||
 	    folder->ns_shared   != NULL)
 		return;
+	
+	if (!imap_has_capability(session, "NAMESPACE")) {
+		imap_get_namespace_by_list(session, folder);
+		return;
+	}
 
 	if (imap_cmd_namespace(session, &ns_str) != IMAP_SUCCESS) {
 		log_warning(_("can't get namespace\n"));