[imp] several php errors

[Antonio Casado Rodríguez]

I've seen several php errors:

2012-11-27T09:08:14+01:00 WARN: HORDE [imp] PHP ERROR: Cannot modify 
header information - headers already sent [pid 26870 on line 0 of "Unknown"]
2012-11-27T09:08:14+01:00 WARN: HORDE [imp] PHP ERROR: Cannot modify 
header information - headers already sent [pid 26870 on line 0 of "Unknown"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: Illegal offset 
type in isset or empty [pid 5702 on line 205 of 
"/usr/share/horde/imp/lib/Mailbox/List.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: array_flip() [<a 
href='function.array-flip'>function.array-flip</a>]: Can only flip 
STRING and INTEGER values! [pid 5702 on line 118 of 
"/usr/share/horde/imp/lib/Indices.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: array_flip() [<a 
href='function.array-flip'>function.array-flip</a>]: Can only flip 
STRING and INTEGER values! [pid 5702 on line 118 of 
"/usr/share/horde/imp/lib/Indices.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: array_flip() [<a 
href='function.array-flip'>function.array-flip</a>]: Can only flip 
STRING and INTEGER values! [pid 5702 on line 118 of 
"/usr/share/horde/imp/lib/Indices.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: Illegal offset 
type [pid 5702 on line 209 of "/usr/share/horde/imp/lib/Mailbox/List.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: Illegal offset 
type [pid 5702 on line 211 of "/usr/share/horde/imp/lib/Mailbox/List.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: Illegal offset 
type [pid 5702 on line 211 of "/usr/share/horde/imp/lib/Mailbox/List.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: Illegal offset 
type [pid 5702 on line 218 of "/usr/share/horde/imp/lib/Mailbox/List.php"]
2012-11-27T09:08:15+01:00 WARN: HORDE [imp] PHP ERROR: Illegal offset 
type [pid 5702 on line 219 of "/usr/share/horde/imp/lib/Mailbox/List.php"]
2012-11-27T09:08:40+01:00 NOTICE: HORDE [horde] User mjmarque 
[212.163.183.241] logged out of Horde [pid 15732 on line 118 of 
"/usr/share/horde/login.php"]
2012-11-27T09:08:48+01:00 WARN: HORDE [imp] PHP ERROR: spl_object_hash() 
expects parameter 1 to be object, null given [pid 27387 on line 53 of 
"/usr/share/horde/imp/lib/Factory/MimeViewer.php"]
2012-11-27T09:08:48+01:00 WARN: HORDE [imp] PHP ERROR: spl_object_hash() 
expects parameter 1 to be object, null given [pid 21117 on line 53 of 
"/usr/share/horde/imp/lib/Factory/MimeViewer.php"]

What happen??

Regards

-- 
Antonio Casado Rodríguez
Área de Comunicaciones
STIC (Servicio de las Tecnologías de la Información y las Comunicaciones)
UNIVERSIDAD DE ALMERÍA