Wiered behavior during execution

Hi,

I have developed and run the test in my machine, what i noticed in my machine is one end to end takes almost 15 to 20 mts which is very lengthy test cases... hence i came to conclusion its because of performance issue on the website.

on second thought i copied the source code to other machine and ran the same test which ran in less than 10 mts.. its suprised me..

i was wondering why is this two behavior (note: both machines are having same configuration and even disk fragmentation is done too..

any clue is really helpful ?

Thanks

Regards
J