[imp] Upgrade from Horde 2 to 3, mysql performance problems.

[Chuck Hagenbuch]

Quoting Mark Keller <mark at pdx.edu>:

> I was actually seeing short hangs from time to time. I have no idea if it was
> just coincidental, but soon as I set the datatree driver back to sql it
> stopped. Can you just turn off datatree in the middle of people using it
> without any problems or do all the current sessions need to be reset?

The latter - configurations are cached.

-chuck

-- 
"we are plastered to the windshield of the bus that is time." - Chris