I experience the same, which force me to deactivate the Agenda app. I am taking the opportunity of this thread to put some other software related issues in perspective:
- Agenda: rings randomly at each event -- the last two days, I was woken up by the Agenda app in the middle of the night
- Refreshing rate of the screen while changing the background image: if you put a new image in the background (wallpaper), you won't have it displayed correctly, you have to restart the cosmo
- App-Bar: if you add or remove items from the App-Bar, it won't show up afterwards, you also have to restart the device
- Distorted display in camera apps: this is related to the App-Bar I think, since when you have added or removed items from the App-Bar, it won't show up anymore, and if you intend to use your camera, you will get a distorted image on the display forcing you to restart the cosmo
- Ledison: has to run as background daemon not popping up at each alert message