Avalon: The problem is, it does not seem to be consistent across all installs of an application. I never have the problem with statusbar-clock, but often have it with Modest. Also, even if you don't have any alarms set, statusbar-clock checks for alarms every time it updates the time (once a minute), so alarms can't be entirely ruled out.

Maybe this week I will make a version without alarms what-so-ever for testing so people with the problem related to statusbar-clock can see if it is alarm related or not.