Well with the latest push update of Xobni that included LinkedIn integration, which I liked, my Outlook decided to start crashing when you looked at it funny.
I noticed that when you tried to resize the Xobni toolbar it would crash. Also, when trying to move a group of tasks from the past to today it would crash.
After uninstalling Xobni, Outlook complained that the plug-in wasn't available and proceeded. I think I got one more crash out of it. I've rebooted since then and now all is well.
I'll keep an eye on the progress Xobni makes towards release and may eventually reinstall.