[imp] Re: Requested message not found

[Chuck Hagenbuch]

Quoting Gary Windham <windhamg at email.arizona.edu>:

> We used to suffer from this problem, but I believe I finally figured out the
> root cause.  If you are using a PHP session handler other than the standard
> PHP "mod_files" one, then it is extremely likely that it is not implementing
> serialization of session access (none of the ones that are included in the
> Horde framework do).  The "mod_files" PHP session handler uses flock() to
> exclusively lock a session from the time it is opened until the time it is
> closed, thereby preventing shared (even read) access to the session data.

You should open a ticket on bugs.horde.org for fixing that with the 
SessionHandler drivers.

-chuck

-- 
"But she goes not abroad in search of monsters to destroy." - John 
Quincy Adams