Removing Proxy Settings
MacOS X
Step 1:
Click the Apple Menu icon and choose System Preferences....

Step 2:
In the Systems Preferences window, click the Network icon.

Step 3:
After selecting the Proxies tab,
remove 8080 and http://proxy.lib.usf.edu from the Web Proxy (HTTP) and Port fields
Uncheck the Web Proxy (HTTP) box.

Step 4:
Your proxy settings are now removed.