[horde] head update and now can't log in

[Kevin Myer]

It broke for me as well, same symptoms.  I think its related to code 
reworked to
handle session concurrency issues, but haven't had a chance to isolate which
exact code breaks things.  Reverting back to pre 5-17 HEAD code allowed me to
login again.

See bug #1580.

Kevin

-- 
Kevin M. Myer
Senior Systems Administrator
Lancaster-Lebanon Intermediate Unit 13  http://www.iu13.org