I've written before about how innovative and useful Xobni is (and can be).I've also written a great deal about how important the mobile net and connectivity are to me.
Apparently the two don't coexist very well (as of now). My Blackberry has been unable to connect and sync via the Blackberry Desktop software (version 4.3). I tried numerous times to fully uninstall and reinstall the software, but to no avail. Considering that the sync always crashed on the calendar function, I decided to try removing Xobni from my system (running Outlook 2007)... and everything ran smoothly.
And with that, an important point is raised: A plugin built on email usage and social connectivity - however awesome it may be - relies on the system that enables those connections.