Alex, onetimepad is the encryption key, we might need it later on.

src/search.php

@@ -612,7 +612,7 @@ global $allow_thread_sort;
 sqgetGlobalVar('username', $username, SQ_SESSION);
 sqgetGlobalVar('key', $key, SQ_COOKIE);
 sqgetGlobalVar('delimiter', $delimiter, SQ_SESSION);	/* we really need this? */
-/*sqgetGlobalVar('onetimepad', $onetimepad, SQ_SESSION);*/	/* do we really need this? */
+sqgetGlobalVar('onetimepad', $onetimepad, SQ_SESSION);	/* do we really need this? */
 
 $recent_prefkeys = array('asearch_recent_where', 'asearch_recent_mailbox', 'asearch_recent_what', 'asearch_recent_biop', 'asearch_recent_unop', 'asearch_recent_exclude');
 $saved_prefkeys = array('asearch_saved_where', 'asearch_saved_mailbox', 'asearch_saved_what', 'asearch_saved_biop', 'asearch_saved_unop', 'asearch_saved_exclude');