Page timeout when process hung

[closet geek]

Hi,

When a PHP process is hung waiting for a response from an external website the person that triggered the hung process is no longer able to load pages on the same subdomain they simply timeout. What setting would cause this behaviour I can't seem to track it down?

e.g. the person goes to subdomain.theirdomain.com and triggers a PHP script that sits waiting for input from an external domain, the person then tries to load another PHP page on subdomain.theirdomain.com it always times out until the original PHP script finishes or is manually terminated.

Thanks!