Again it happened, WhatsApp Account disappeared.
I downloaded from:
http://blog.thyphoon.org/files/WhatsA...mPlugin.zip
installed it and back it was and worked.

Since some days or weeks no more connection. So I downloaded the update from:

http://blog.thyphoon.org/files/WhatsA...mPlugin.zip

installed it with Adium and it worked again.
Thank you!

Great! Thanks.
It works again :)

Please update, it is Adium 1.5.10 now, no more beta.