[horde] Simple Solution to 'Database performance problem with Horde3/IMP4 with a large user base'

[Chuck Hagenbuch]

Quoting Akritidis Xristoforos <Xristoforos.Akritidis at hol.net>:

> Thanks to Ioannis Koutsileos, the simple solution I proposed was  
> implemented and has been working great for us for the past week.  
> Hope this helps others as well.

I've committed this change to HEAD as it tested okay locally for me.  
I'm not sure I can subjectively tell the difference on my main  
install, but on a laptop install that used to be pretty pokey things  
definitely feel zippier.

Please, anyone with a HEAD checkout, test this and let us know how it  
does and if you find any problems with it. If it checks out we'll get  
it into a stable release sooner rather than later.

-chuck

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