> I trace 'active_record', I found Gem::LoadError has 3 difference performance.
> version,time,percent
> 1.8.7 0.106,100%
> 1.9.2 orignal,0.184,174%
> 1.9.2 cut $: to $:[-9,9],0.158,149%

What about 1.9.2 uncut?
-rp