You might take a look at what Jeremy had to say on a similar post: http://ithemes.com/forum/topic/26808-serverbuddy-memory-limit-check-pay-attention-to-local-value/
There he's talking about the memory_limit, and not max_execution_time, but he does an excellent job of explaining how it all works. Plus, if you look at your memory_limit on your server configurations and PHP Core configuration, you'll notice the same thing as discussed on the post!
If you have any further questions, be sure to post them here and we'll address them for you!
Thanks,
Elise



