I went into the config and enabled the caching and then it started throwing these errors:
[01-Sep-2011 12:27:33] MDB2 Error: constraint violation (-3): _doQuery: [Error message: Could not execute statement]
[Last executed query: EXECUTE mdb2_statement_mysql_1362585573b44d4bcfa100ef22936d485d690311e19 USING @0, @1, @2, @3, @4, @5, @6, @7, @8, @9, @10]
[Native code: 1062]
[Native message: Duplicate entry '162-INBOX.msg-89332' for key 2]
[01-Sep-2011 12:27:33 -0500]: DB Error: MDB2 Error: constraint violation Query: _doQuery: [Error message: Could not execute statement] [Last executed query: EXECUTE mdb2_statement_mysql_1362585573b44d4bcfa100ef22936d485d690311e19 USING @0, @1, @2, @3, @4, @5, @6, @7, @8, @9, @10] [Native code: 1062] [Native message: Duplicate entry '162-INBOX.msg-89332' for key 2] in /var/www/html/roundcubemail-0.5.4/program/include/rcube_mdb2.php on line 642 (POST /roundcube/?_task=mail&_action=moveto?_task=&_action=)