If, like me, you use Outlook Web Access (OWA) to access e-mail from a client site, you may experience some issues with the Internet Explorer popup blocker in Windows XP SP2. To be honest, I’ve not found it a major concern as I added all the key servers at my company’s domain name to the trusted sites zone, but if that is not an option (e.g. due to policy restrictions in place), you may have to find a workaround. A few weeks back, the Windows IT Pro magazine network Exchange and Outlook Update ran an article on OWA and XP SP2 and Microsoft knowledge base article 883575 gives further information.