This is normally a pop-up blocker issue.

1) Check for Windows XP SP2 Pop Up blocker and disable

2) Look for toolbars such as Google Search bar or Yahoo Search Bar on top of the Internet Browser

It could also be a ZoneAlarm, Norton Firewall, or other Firewall issue

1) Must turn off Internet Firewalls to use Lotus Web Mail

Turn off Nielson Internet Ratings Software so Lotus works:

1) Right-click the Blue square icon in the systray (by your computer clock)
2) Click Close
3) Open Internet Explorer
4) Click Tools -> Internet Options
5) Click the Connections Tab
6) Click LAN Settings button
7) Uncheck the Use a Proxy or VPN connection

When you reboot, Nielson will be turned back on and Lotus will not work again until you do the steps above.

The other option is to simply uninstall Nielson Ratings software through Add/Remove Programs.

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