Comment 26 for bug 139627

I just upgraded to natty and this changed the version of my gnome-panel to 1:2.32.1-0ubuntu6 where this should be fixed according to the above posts.

However this didn't solve the problem on my machine... What happens now made me laugh a bit: Now the opened day is correct but the month opened is the month, that was clicked, minus one. (Double click on April 29th opens March 29th - the year is correct though ;-) )

I guess the bug is still in the panel, since the issued command is the following for my example:
evolution calendar:///?startdate=20110329
Another indication for this is, that clicking on a date in the unity clock applet (or "indicator", as I believe those are called now) works fine! Unity calls:
evolution calendar:///?startdate=20110428T230000Z

Before trying I removed all evolution settings using the following commands:
rm -r ~/.evolution/
rm -r ~/.gconf/apps/evolution/
evolution --force-shutdown
killall gconfd-2