When Caching memory for better performance in your scripts, sometimes you'll have segmentation faults which means your script is trying to access a memory location that it cannot access, thus your server crashes, and what's the solution to this? Hell if I know, I need help with this one.
"The reasonable man adapts himself to the conditions that surround him... The unreasonable man adapts surrounding conditions to himself... All progress depends on the unreasonable man." - George Bernard Shaw