A big delay on a remote machine

Hello, Just to know if you have any idea on this: I run my php-gtk program on my machine (1) and it takes max 2sec for my first window to appear. On an another machine(2), I mount a network drive on (1) and I run the same program, it takes at least 7sec for the window to appear. After that I have the same reaction time no matter that machine I am on. I first thougt it was the access to the database but I have the same difference with a simple example. I also try to relocate my dll files on (2) but it seems not to be the problem. Is there a way to reduce this delay? What is php-gtk doing? is there a way I can find out? Thanks for your help, Kristel