I also ran into this problem:
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A fatal error has occurred:
DB Error: connect failed
[line 108 of /home/httpd/html/horde/lib/Prefs/sql.php]
Details have been logged for the administrator.
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This was for an upgrade from 5.6 to 6.0final.
I only lost one day's worth of e-mail, I replaced the server with one that upgraded right (same CD). Recreated all the users, I-Bays, and settings to match the wounded box. Any Ideas on how to retrieve the e-mail from that server?
