[imp] Problem with DB PEAR and Postgres

[emacias@usb.ve]

Postgres has problem with creation sequence horde_datatree_seq and  
horde_histories_seq. I probe Mysql and it was work fine.
Well, i created sequences tables with sql: create sequence  
horde_histories_seq increment 1. They work but now i have problem,  
when I add signature in options, appear an error:
  DB Error: unknown error: INSERT INTO horde_prefs (pref_uid,  
pref_scope, pref_name, pref_value) VALUES('jlanz', 'horde',  
'identities', 'a:1:{i:0;a:14:{s:2:"id";s:21:"Identidad por  
omisi?n";s:8:"fullname";s:0:"";s:9:"from_addr";s:0:"";s:12:"replyto_addr";s:0:"";s:10:"alias_addr";a:0:{}s:10:"tieto_addr";a:0:{}s:8:"bcc_addr";a:0:{}s:8:"mail_hdr";s:0:"";s:9:"signature";s:14:"Jose Luis Lanz";s:9:"sig_first";i:0;s:10:"sig_dashes";i:0;s:14:"save_sent_mail";i:1;s:16:"sent_mail_folder";s:9:"sent-mail";s:16:"default_identity";s:1:"0";}}') [nativecode=ERROR:  secuencia de bytes no válida para codificación «UTF8»: 0xf36e223b] [on line 258 of  
"/var/www/html/horde/lib/Horde/Prefs/sql.php"]

and then, i try to do the same in other language (from spanish to  
english) and it works...
Can you help me please?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-keys
Size: 1340 bytes
Desc: Clave PGP =?us-ascii?b?cMO6YmxpY2E=?=
Url : http://lists.horde.org/archives/imp/attachments/20060719/642bb2eb/attachment.bin