A new beta version of BirdieSync has been released which no longer uses BirdieSync account to synchronize your contacts. So you should now be able to use the stock contact application again to manage your contacts.
For more flexibility and to still address some problems with some specific Android devices, you can now choose the accounts you wish to synchronize (Phone, Google, BirdieSync, etc.).
The beta version is available for Thunderbird 5.0:
http://www.birdiesync.com/forum/viewtop ... f=1&t=1514
And for Thunderbird 3.1:
http://www.birdiesync.com/forum/viewtop ... f=1&t=1534
Please quickly report any problem you have with this new version or comment you have. Don't wait for the official release to do it !
The release cycle is intended to be short.
Post the version of Android you use and the model of your Android device.
Thanks.