I'm having the same issue. I'm also running Edgy. In fact, I receive a crash as well. I've attached the crash log. Here's the situation...
I right-click on the time/date in the upper right corner and select "Adjust Date & Time". The Time and Date Settings window appears and the spinning dial runs for about 15 seconds while I hover my cursor over the window. I selected "Keep clock synchronized with Internet servers:" and it installed some things. Then I went into the "Select Servers" list and saw a list of servers. At the bottom of the list were 3 checked items. The first item was a blank line. The second item was ntp.ubuntu.com. The third item was 127.127.0.1 or something like that. I unchecked them all, which caused them to disappear from the list. I added in us.pool.ntp.org and closed the windows. I then went back into the "Adjust Date & Time" and then "Select Servers" and us.pool.ntp.org was no longer there. No servers were selected. I added it back in and then tried to uncheck it. That's when the crash occurred. I can duplicate these problems every time. Unchecking the "Keep clock synchronized with Internet servers:" checkbox and then clicking the "Synchronize Now" button doesn't seem to do anything. ** Attachment added: "Bug Report for Time Admin Crash" http://librarian.launchpad.net/6488777/time-admin-bugreport.txt -- [time-admin] adding ntp server ip from clock applet fails https://launchpad.net/bugs/84194 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs