We were on Java 6 update11 running a web app with no issues.
Then we updated to Java 7 update 51 and entered the website in our exceptions tab.
After logging into our web app, it takes 3 minutes for the page to display!
When on Java 6 it loaded right away, if we remove 7 and go back to 6 everything goes back to normal. However due to security concerns we have to go to Java 7.
We are testing from Windows 7 workstations and all of the workstations do it.