Yes caching is enable, and after a truncate, the problem is still here..
Here are more error messages :
[08-Nov-2010 12:15:52] MDB2 Error: constraint violation (-3): _doQuery: [Error message: Could not execute statement]
[Last executed query: EXECUTE mdb2_statement_mysql_7b71c080fa76e4ca04ef12634454457933d1988b6 USING @0, @1, @2, @3, @4, @5, @6, @7, @8, @9, @10]
[Native code: 1062]
[Native message: Duplicate entry '2-INBOX.msg-179728' for key 'uniqueness']
[08-Nov-2010 15:01:37] MDB2 Error: constraint violation (-3): _doQuery: [Error message: Could not execute statement]
[Last executed query: EXECUTE mdb2_statement_mysql_6717b1c63eab94047e68f2e3ed0fe2ca2400d9840 USING @0, @1, @2, @3, @4, @5, @6, @7, @8, @9, @10]
[Native code: 1062]
[Native message: Duplicate entry '24-INBOX.Samuel.msg-1383' for key 'uniqueness']
My roundcube install hold 5 differents imap server connection.
bagu.bif, bagu.fr, techni-art.com, byjs.fr and runcms.fr
Is there a problem with that ?