Ubuntu problem with time change?

[edwardp-mh2Nk+tgbQM at public.gmane.org]

Powered on a 64-bit Ubuntu 10.04.1 LTS system this morning, the login 
screen briefly appeared for maybe 1/2 to 1 second, then the desktop 
appeared with the regular background, the clock (off by one hour (EDT)) 
and the icon for shutdown options, nothing else.

Rebooted and everything worked as expected with the time displaying 
correctly (EST).

Has anyone else seen this?