[Tickets #10098] save_sent_mail pref gets corrupted

[bugs at horde.org]

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Ticket URL: http://bugs.horde.org/ticket/10098
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  Ticket             | 10098
  Created By         | rsalmon at mbpgroup.com
  Summary            | save_sent_mail pref gets corrupted
  Queue              | IMP
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
+New Attachment     | sentpref-horde.txt
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rsalmon at mbpgroup.com (2011-05-18 13:39) wrote:

This is happening for a while now (a few weeks), save_sent_mail pref  
gets corrupted at some stage.

$conf['user']['select_sentmail_folder'] = true;
$conf['server']['fixed_folders'] = array('Drafts', 'Trash', 'Sent');
$_prefs['save_sent_mail']['value'] = 1
$_prefs['sent_mail_folder']['value'] =>  
Horde_String::convertCharset('Sent', 'UTF-8', 'UTF7-IMAP')

Using dynamic mode, courier-imap, I log in (using english language or  
french) and do some compose/reply/drag&drop/delete messages. And after  
a while, could be 10 minutes or 1 hour, I get the following notice
'The folder "Sent" was successfully created' !

And a weird inaccessible folder is created : "Array\n"

attached is horde.log

I haven't found a way to reproduce this so I'm open to any idea on how  
to track down this issue.