Version: (using KDE 4.3.1) Installed from: Debian testing/unstable Packages It _looks_ as if the clock on the dashboard is rendered on top of the clock from the desktop, and the bottom one doesn't get updated when the minutes roll over.
Created attachment 37457 [details] Screenshot Look at the last digit in the clock.
it probably isn't get an expose event and so isn't painting. and yes, the dashboard is another view over the desktop one.
*** This bug has been marked as a duplicate of bug 198916 ***