[horde] kronolith off-by-one-hour daylight savings time bug

[Benjamin Rose]

Hi Everyone,

Now that DST is just a few short days away in NYC, I have users once 
again noticing their recurring 2pm meetings/appointments all say 3pm 
next week. This goes for the Kronolith web interface itself, as well as 
any user I have subscribed to CalDAV/ics who is on Linux/Mac/Windows. 
Yes, Outlook too has the time shifted. I have seen more "broken" clients 
than "working" at this point. I am trying to track down the source of 
this bug and fix it once and for all. I have commented trying to reopen 
this ticket:

http://bugs.horde.org/ticket/12773

Can someone please reclassify that ticket as open? Or should I file a 
new bug report? I am the systems manager here so I can provide all sorts 
of proof and/or test data. As far as I can tell the only reason this 
ticket was closed was because an Android client worked through 
ActiveSync, but that doesn't seem like very thorough testing considering 
every other client I have tested is broken.

Thanks,
Ben

P.S. If you know your way around kronolith code and/or the way dates/dst 
is normally handled, please write me, some cache hints as to where to 
look to squash this bug would speed me up tremendously.