This tells me that there is some DNS issue. Using the IP is the direct way to get to a Web site. Think of the IP address as your current street address. Then think that some big database exists so that to deliver mail, peopledidn't need to know your street address. All they had to do was to send mail to "Pam Hagen." Then, the mail person looked you up in a database to find out your actual street address so the mail could be delivered. That's what the DNS does for the Internet.
Now, suppose you move. If all goes well, your new street address is entered into the database so people don't even need to knowyou've moved. They keep sending mail to "Pam Hagen." But if something happens and the new address isn't in the database properly, your mailcan't be delivered by sending it to "Pam Hagen." But if the sender knows your real street address, they'll always be able to get mail to you.
Your ISP manages a DNS server that does these lookups. DNS changes are propagated around the Internet by many computers as they all try to synch up and have the correct data.
One complication is that each person could create their own DNS database on their machine. That's what a HOSTS file is for. It doesn't look like your computer is using one, though, as the HOSTS file we are looking for wouldn't be SAM files as that generally indicates it is a SAMple HOSTS file and is not in use.
I'd suggest you contact your ISP and ask if they can get to uftree.com. Ask them to try as if they were a customer because how they connect from work is not always using the same systems as their customers use.
I hope this helps.
Sincerely, Paul Burchfield, Genealogy.com Technical Support Find Ultimate Family Tree knowledge base articles, hints, tips, message boards and more at: http://www.uftree.com/UFT/Nav/ufttech.htmlhttp://www.uftree.com/UFT/Nav/ufttech.html