A nice little trick I read yesterday about Charles Proxy. First, you connect to PSN, you select the download you want. After pressing the download button, the PS Store asks you about Sharing activity with local players, press the PS Home button goto the setting>Network>Advanced> select Do Not Use Proxy. Then go back to the PS Store and choose NO on the message that is still there. The download will begin using your internet connection and be much faster and not have trouble with 30 minute sessions. As for fiddler2, I still have not tried it because Charles Proxy seems to be steady for me and I haven't needed to be online for long.
Twenty Minutes Into the Future