Recently, I renewed my subscription to Zone Alarm Pro ( personal firewall, ad blocker, etc etc ). When I completed my renewal, I was running version 4.0xxx and was unable to see the second page of the Universal Thread login. After some correspondence with Michel Fournier, I found the problem was MINE! So, I spent the past 1/2 hour finding that I could configure ZAPro specifically for www.levelextreme.com:

1) After successfully installing Zone Alarm Pro Version 4
2) Right click on the [ZA] icon in the task crib ( may alternately show as an internet activity dynamic display icon )
3) Choose the Privacy Page ( label on left side of form )
4) Choose the Site List Tab ( across the top )
5) Locate the row for www.levelextreme.com
5a) If you don't see www.levelextreme.com, click on the [Add] button ( near the botton of the page ) and add the UT to the list of sites
6) Right click on the pencil icon in the UT row
7) You should see the Site Options Window
8) Choose the Ad Blocking tab ( across the top of the page )
9) De-select the 'Pop-up / Pop-under' check box
10) Click either [Apply] or [Ok]

This should allow UT to work properly, while blocking other Pop-up / Pop-under advertisements.