Fixed.

No. Guests on my system has access to Agora only.

Do guest users have read access to *all* calendars and tasklists on 
your system?

After introduction of unified Alarm system into HEAD I see a big 
memory hog and ~5 second delay trying to view login window. This 
happens because Horde is trying to list all events for guest user from 
all users on the system. Queries:



Mar 29 23:59:55 HORDE [debug] [kronolith] SQL event list by : query = 
"SELECT event_id, event_uid, event_description, event_location, 
event_private, event_st

atus, event_attendees, event_keywords, event_title, event_category, 
event_recurcount, event_recurtype, event_recurenddate, 
event_recurinterval, event_recurda

ys, event_start, event_end, event_alarm, event_modified, 
event_exceptions, event_creator_id FROM kronolith_events WHERE 
calendar_id = ? AND ((event_alarm > ?

)) AND ((event_end > ? AND event_start < ?) OR (event_recurenddate >= 
? AND event_start <= ? AND event_recurtype <> ?))" [on line 302 of 
"/var/www/html/horde

/kronolith/lib/Driver/sql.php"]



and



Mar 29 23:59:55 HORDE [debug] [nag] SQL alarms list by : table = 
nag_tasks; query = "SELECT * FROM nag_tasks WHERE task_owner = ? AND 
task_alarm > 0 AND (tas

k_due - (task_alarm * 60) <= ?) AND task_completed = 0" [on line 419 
of "/var/www/html/horde/nag/lib/Driver/sql.php"]



are performed exactly 230 times (<-- number of users on my system). 
This is very bad and can lead to horrible performance on big 
installations.