probably a stupid question but I am not able to have it working properly. I have just installed version from extra-testing (0.11.1-1) but it seems that only analog and binary clocks are working.
For all others I get nothing displayed.
I tried to change the font (using Nokia Sans), I tried to change the colors. I reinstalled the plugin. I rebooted several times. I tried the different options (seconds, 12 hour mode,...)...
I am out of ideas now...
Thanks for this anyway.

EDIT: I found the problem: 'text scaling'. Increasing it from 1 to some more reasonable numbers seems to make it visible now... But maybe a bigger default value would be better?!