Minor issue and work around. I went online and looked at Player Profile, and Undercover reported unable to download player stats. I went to leaderboards, selected friends / all time and looked for a record of one of my runs. Once I found one, I then clicked on a line with my persona on it to view player stats and they downloaded. After this, I was able to go back to the main online menu player profile and it downloaded the stats OK.
I have a multi-boot system (Win XP / Win XP X64 / Win 7 64 bit), and I'm still running Undercover with WIndows XP Pro (32 bit). I have the original dvd-rom install version, and a download for the update to 1.1.18 (this adds challenge series). I just went online to see if the servers were still running when I ran into the player profile issue and figured out the workaround (use view player stats from leaderboard display).
I'm wondering if NFS World personas (drivers) are affecting other games, and possibly was the cause of Undercovers unable to load player stat issue (perhaps choosing a NFS World persona that matched the Undercover persona I use). I was in the beta sessions, and my EA account ended up with numerous personas, many of them with the same name. I had to work with support to carefully remove all the personas from the beta sessions. That still left some NFS World personas with the same names as personas I've used with other games.