I had the same problem with my new Dell Latitude D620, the reason - my mistake, i force shutdown Edgy when it was in the process of shutting down. Used this guide to unplug the coin cell battery. I had to go into the bios and change the FASTIR to com2 after that.
My bios - http://ftp.us.dell.com/bios/D620_A07.EXE Guide i used - http://support.dell.com/support/edocs/systems/latd620/en/SM/coincell.htm#wp1111212 -- Ubuntu corrupts real time clock on some dell laptops https://launchpad.net/bugs/43745 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
