How Do I Prevent MSIE 8 From Reloading PAC File?

Exactly what the title says. I need to stop IE 8 from reloading the PAC file on every request the browser makes.

I only require it to load once per session.

From serverfault darkAsPitch

• I haven't seen this behaviour before. The only thing that comes to mind is that caching of proxy autoconfiguration (PAC) scripts might be disabled. Even so, I wasn't aware that disabling such caching caused the script to be loaded more than once per browser session.

  The setting is configurable via Group Policy at: User Configuration / Administrative Templates / Windows Components / Internet Explorer / Disable caching of Auto-Proxy scripts

  In the registry, the policy setting lives at: HKCR\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\EnableAutoProxyResultCache

  darkAsPitch : Thanks Evan, I'll poke around the registry shortly and get back to all here asap with the results. I do remember playing around with cache settings, but not PAC cache in particular.
  From Evan Anderson