Strange backslash "\" in ending of address.

[CraXyOW3]

Ok, where to start.
Well i got this script
http://clement.beffa.org/labs/projects/w2box/

and even tried this
http://filenice.com/

The w2box, when uploading it returns to the main address, i.e "http://127.0.0.1/" but for some reason i get returned to "http://127.0.0.1\/".
The fileNice works mostly except the $php_self container returning "http://127.0.0.1\" and when clicking the link (also in the generated htmlcode) i get "http://127.0.0.1\/".

Why am i getting this and how can i correct it ?
I tried using LightTPD too but it gave me the same results!

Using WinXP, NO IIS active at all. Latest XAMPP

[Wiedmann]

Why am i getting this and how can i correct it ?

You must ask this the authors of those scripts.