This was bugging my parents all day! Excel + Word and NAV have been slow to load etc, and this is apparently the problem.
"We had to do a little sleuthing today. Many readers wrote in with problems that turned out to be related. A certificate which Verisign used for signing SSL certificates has expired. When applications which depend on that certificate try to make an SSL connection, they fail and try to access crl.verisign.com, the certificate revocation list server. This has effectively DOSed that site, and Verisign has now updated the DNS record for that address to include several non-routable addresses, reducing the load on their servers. Some applications affected include older Internet Explorer browsers, Java, and Norton Antivirus (which may manifest itself as Microsoft Word being very slow to start). Hope this helps a few people, and if you have other apps with problems, please post about them below."
Good "ol verisign eh. Nice to know the webs in safe hands. Press comments for info on some resolutions.
View: Verisign Page
News source: The ever reliable Slashdot